a. The average length of a calendar month (a twelfth of a year) is about 30.4 days. When the Sun reaches that point, the centre of the Sun sets at the lunar north pole and rises at the lunar south pole. The sign of the result may be positive, zero, or negative and the sign tells us something about the type of orbit:[1], The transverse orbital speed is inversely proportional to the distance to the central body because of the law of conservation of angular momentum, or equivalently, Kepler's second law. A simple visualization of Moon orbiting Earth in a view from the north ecliptic pole. equilateral triangles, squares, and regular pentagons. C- income tax The sun and the solar system appear to be moving at 200 kilometers per second, or at an average speed of 448,000 mph (720,000 km/h). A) Both vectors point in the same direction. Around this time, the Moon's declination will vary from 2836 to +2836. Circumference of orbit = 2.41 x 10 m. Time taken, t = 27.3 days = 27.3 x 24 x 60 x 60 = 2358720 seconds. As a bonus, we will also give you the formula to calculate the speed of the Moons orbit. Why do you think cattle's ability to hear infrasonic frequencies might contribute to a stampede? Circular orbit speed or velocity m/s: m/s: Circular orbit speed or velocity ft/sec: ft/sec: Period of circular orbit minutes: typically the Earth. Because of the tidal torque, caused by the ellipsoids, some of Earth's angular (or rotational) momentum is gradually being transferred to the rotation of the EarthMoon pair around their mutual centre of mass, called the barycentre. Babylonian astronomy discovered the three main periods of the Moon's motion and used data analysis to build lunar calendars that extended well into the future. How fast does the Moon travel around Earth? d > 0 The waxing Moon rises over a ridge in the Wasatch Mountains, Utah. Webthe Earth's surface Speed Orbital period Specific orbital energy; Earth's own rotation at surface (for comparison not an orbit) 6,378 km: 0 km: 465.1 m/s (1,674 km/h or 1,040 mph) 23 h 56 min 4.09 sec: 62.6 MJ/kg: Orbiting at Earth's surface (equator) theoretical 6,378 km: 0 km: 7.9 km/s (28,440 km/h or 17,672 mph) 1 h 24 min 18 sec When the Sun is the furthest below the horizon (winter solstice), the Moon will be full when it is at its highest point. WebSATELLITE MOTION 1. Bottom: Oceanwavesare transversewaves: the water moves back and forth at right angles to the line in which thewave travels. Spend the next month getting to know the Moon. The ________________ is the region around the Sun, extending more than one million kilometers from its surface, where the temperature can reach two million degrees. All together, they've walked ______ blocks and have a total displacement (magnitude only) of four blocks, consider east-west direction along x-axis and north-south direction along Y-axis, A = displacement in north direction = 2 j, B = displacement in west direction = - 4 i, C = displacement in south direction = - 2 j, Distance = |A| + |B| + |C| = 2 + 4 + 2 = 8 blocks. Thus, the atmospheric temperature remains constant at the pauses. Which of the following statements concerning statistical probability is not true? The Moon's axis of rotation is inclined by in total 6.7 relative to the normal to the plane of the ecliptic. For example, at the Solar eclipse of March 9, 2016, the Moon was near its descending node, and the Sun was near the point in the sky where the equator of the Moon crosses the ecliptic. In both cases, the Moon is in syzygy, that is, the Sun, Moon and Earth are nearly aligned. The average distance is around 384,400 kilometers or 230,600 miles. if the combined mass if the bicycle and julies is 30 kilograms. Now imagine a very powerful cannon atop this mountain. Solution: Reasoning: The distance the moon travels in one orbital period T is d = 2r. [11] It also means that when the moon is farthest north of the ecliptic, the centre of the part we see is about 6.7 south of the lunar equator and the south pole is visible, whereas when the moon is farthest south of the ecliptic the centre of the visible part is 6.7 north of the equator and the north pole is visible. Could any of their children be born with brown eyes? Orbital Velocity (km/s or miles/s) - The average velocity or speed of the planet as it orbits the Sun, in kilometers per second or miles per second. Andrea Jones, Caela Barry, Tracy Vogel The muzzle velocity of the cannonball depends on the amount of shot put into the cannon. The centripetal acceleration of moon will be. An event referred to as a "supermoon" occurs when the full Moon is at its closest to Earth (perigee). How did space photography help astronomers? However, because the orbital velocity of the Moon around Earth (1km/s) is small compared to the orbital velocity of Earth about the Sun (30km/s), this never happens. This is called a minor lunar standstill. Which of the following keeps the moon in orbit around Earth? The moon however appears slower. Obviously, the effect of these seasons is minor compared to the difference between lunar night and lunar day. The right-hand rule can be used to indicate the direction of the angular velocity. it's speed is : v = r = r 2 T = 2.r T, where T is the lunar orbital period, and r the orbital radius of moon (the moon follows an ellipse but the eccentricity is small enough that you can treat it as a circle.) Most of the apparent movement of the Moon is actually due to the rotation of the Earth. In contrast, as ozone absorbs solar UV radiation, the temperature in the stratosphere above is rising. It facilitated the visual perception of electromagnetic radiation in the radio frequency. This is all about the, 7 Excellent Ways to Reduce Clutter from Your Humble Abode. Yes because he is only sharing patient information with another doctor. WebThe centripetal acceleration of the moon is v 2 /r = 2.725*10-3 m/s 2.Whereas the centripetal acceleration of the Earth is about 0.03m/s 2. Asking for help, clarification, or responding to other answers. This interaction is was first discovered by Sheldon Glashow and in 1979 he was awarded by Noble prize for his theory. Identify the strongest thesis statement. Use MathJax to format equations. Please help me due today! The crater Eimmart A is about 4.5 miles (7.3 kilometers) wide. Instead, the forcing generates the long ocean waves which propagate around the ocean basins until eventually losing their energy through turbulence, either in the deep ocean or on shallow continental shelves. A. Probability involves the level of certainty a researcher has in a circumstance or event taking place. it's speed is : $$v = r omeg We already have the mass, m and the radius of the orbit r, so we need to find the velocity first. At that time the Moon is a bit ahead in its orbit with respect to its rotation about its axis, and this creates a perspective effect which allows us to see up to eight degrees of longitude of its eastern (right) far side. 7627 / (17,061 ) (6.67 10 )(6 10 ) 6 11 24 2 2 2 2 The moon moves through 0.55 arcminutes per minute of time. At what time of the day is the moon closest to earth? Coriolis Effect The rotational axis of the Moon is not perpendicular to its orbital plane, so the lunar equator is not in the plane of its orbit, but is inclined to it by a constant value of 6.688 (this is the obliquity). The planet moon takes about one month of 27.3 days to orbit Earth to compete for a revolution, but 29.5 days to change from New Moon to New Moon. record the losses caused by the Civil War. As the Earth rotates faster than the Moon travels around its orbit, this small angle produces a gravitational torque which slows the Earth and accelerates the Moon in its orbit. can be measured in several units. The Moon's apsidal precession is distinct from the nodal precession of its orbital plane and axial precession of the moon itself. Published: December 2, 2022. WebThe moon revolves around Earth. WebWhat is the tangential speed of the earth rotating around the sun? 1. which kind of waves are sound vibrations made of? The reference by H. L. Vacher (2001) (details separately cited in this list) describes this as 'convex outward', whereas older references such as ", solar eclipse of September 1 of the same year, Jet Propulsion Laboratory Development Ephemeris, "Flying gold knocked the moon off course and ruined eclipses", "Moonlight helps plankton escape predators during Arctic winters", "Secular tidal changes in lunar orbit and Earth rotation", "Tides and the evolution of the Earth-Moon system", Caltech Scientists Predict Greater Longevity for Planets with Life, "The Orbit of the Moon around the Sun is Convex! We are approximately 93 million miles (150 million km) from the Sun, and at that distance, it takes us one year (365 days) to go around once. since the moon completes one revolution around earth in one day: angular speed = = (2 rad/24hr)(1 hr/60 min)(1 min/60 sec) = 7.27 x 10^(-5) rad/sec. The animation shows both the orbit and the rotation of the Moon. NASA Official: The orbit of the Moon is a nearly circular ellipse about the Earth (the semimajor and semiminor axes are 384,400km and 383,800km, respectively: a difference of only 0.16%). Theoretical considerations show that the present inclination relative to the ecliptic plane arose by tidal evolution from an earlier near-Earth orbit with a fairly constant inclination relative to Earth's equator. molecular weathering, which of these waves requires a medium to travel through light wave electromagnetic waves sound wave microwave, What are the two key elements needed for fossilization. Ptolemy described lunar motion by using a well-defined geometric model of epicycles and evection. Lori Glaze opportunity for education The escape velocity of Moon is 2.4 km/h or 1.5 miles per hour. (b) Find the satellite's orbital period. Thank you. This nation is famous for kicking off the Age of Exploration. Wait a moment and try again. What is the diameter of the moon in comparison to the earth? Conversely, 9.3 years later, the angle between the Moon's orbit and Earth's equator reaches its minimum of 1820. WebThe average speed of the Moon around the Earth. is the Gravitational Constant . B) 200 Where M is the (greater) mass around which this negligible mass or body is orbiting, and ve is the escape velocity. This is a group of elements from the periodic table that have their outer level electrons in the same period as the row in which they are located. Yes, it is possible, therefore, a scientist has calculated it. Circle yes or no. 2) Total times taken by the moon revolving around the earth. The properties of the orbit described in this section are approximations. The Sun's gravitational effect on the Moon is more than twice that of Earth's on the Moon; consequently, the Moon's trajectory is always convex[25][26] (as seen when looking Sunward at the entire SunEarthMoon system from a great distance outside EarthMoon solar orbit), and is nowhere concave (from the same perspective) or looped. D) The question is meaningless, since the acceleration is zero. The period of the moon is approximately 27.2 days. In representations of the Solar System, it is common to draw the trajectory of Earth from the point of view of the Sun, and the trajectory of the Moon from the point of view of Earth. It includes the fields of biology, chemistry, physics and geography. B. The purpose of the Marshall Plan was to rebuild European nations and make them less likely to embrace radical politcal options such as, Select the word(s) that should be capitalized. WebAnswer (1 of 5): The formula for centripetal acceleration is as follows a = v^2/r The circumference of the Moons orbit is given by 2*pi*r. So the circumference is 2,412,741,120 meters. WebThe average speed of the moon around the earth is 1021.74 m/s. Connect and share knowledge within a single location that is structured and easy to search. WebView the full answer. 1045 km/h C. 1.045 km/s D. 1.045 m/s 2. (5 points) (b) What is the speed of the moon (in m/s)? When e = 0, the ellipse is a circle. [1], For orbits with small eccentricity, the length of the orbit This tax is what the employer withholds from an employee's paycheck. a. In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. How far away is the Moon? Astronaut John Young, who walked on the Moon during Apollo 16 and commanded the first space shuttle mission, has passed away at the age of 87. Why is category theory the preferred language of advanced algebraic geometry? A. Olympic diving is a graceful and entertaining sport. An enduring myth about the Moon is that it doesn't rotate. In this article, we will give the exact speed of the moons orbit in detail. d > 6 In the case of the ocean tides, the speed of tidal waves in the ocean[16] is far slower than the speed of the Moon's tidal forcing. Why is the moon described as a "silent planet"? The Aristarchus crater (about 25 miles or 40 kilometers indiameter) and plateau is one of the most geologically complex areas on the Moon. Let me give you an example. The equation of the ellipse yields an eccentricity of 0.0549 and perigee and apogee distances of 362,600km (225,300 mi) and 405,400km (251,900 mi) respectively (a difference of 12%). What does "rooting for my alt" mean in Stranger Things? It revolves around the earth in 27.3 days. Multiplication implemented in c++ with constant time, Rivers of London short about Magical Signature. hence the displacement is 4 blocks in west direction. Determine the orbital speed of the moon if its 384,400 km away from the Earth. In large cities, it ranges from 9.7806 in Kuala Lumpur, Mexico City, and Singapore to 9.825 in Oslo and Helsinki. No because he is using his work computer for personal reasons. The moon hasn't escaped Earth's gravity, or it wouldn't be revolving around the earth. But it is at a distance of 384,400 Km so your the span of view is the entire sky due to which it appears to move slowly to us. 4 % then moon will. it's speed is : #v = r omega = r (2pi)/T=\frac{2\pi.r}{T}#, where #T# is the lunar orbital period, and #r# the orbital radius of moon (the moon follows an ellipse but the eccentricity is small enough that you can treat it as a circle. When we stand on the side of a street and watch a car zooming at 100 Km/H we feel that the car is moving fast. WebA rock that weighs 100 lb on Earth is taken to the Moon. ", https://en.wikipedia.org/w/index.php?title=Orbit_of_the_Moon&oldid=1161671605, Short description is different from Wikidata, Articles with unsourced statements from September 2022, Creative Commons Attribution-ShareAlike License 4.0, with respect to the distant stars (13.36874634 passes per solar orbit), with respect to the Sun (phases of the Moon, 12.36874634 passes per solar orbit), with respect to the ascending node (precesses in, This page was last edited on 24 June 2023, at 07:55. This gives rise to a diurnal libration, which allows one to view an additional one degree's worth of lunar longitude. WebThe moon revolves around Earth. Lets put the values in the formula and get the answer. WebHow small is the Moon compared to Earth? The term can be used to refer to either the mean orbital speed (i.e. k=30(3.4)^2, so the answer is 346.8 J. Note: The Orbit Is Nearly Circular. This would actually be known to be called the "corona". The volume of oil in one barrel is equal to 42 gallons is True, The United States uses more oil than any other country in the world is True, Water can be pumped into oil reservoirs to increase the pressure of the existing oil is True, The Exxon Valdez ship spilled crude oil off the coast of California is False as it occurred in Alaska, Farmers in the United States grow more diverse crops than any other country in the world is True, Gradually taking over farmland over a long period of time is known as commodities is False, The 2002 farm bill gives money to farmers who grow crops like wheat and soybean but not to fruit and vegetable farmers is True, Some farmers have been selling their land to developers for urbanization because it is more cost-efficient to do so than to grow crops is True. The draconic month is the time from ascending node to ascending node. For an object in an eccentric orbit orbiting a much larger body, the length of the orbit decreases with orbital eccentricity e, and is an ellipse. Historical Date: November 23, 2020. WebAnswer:It is 7850 m/sExplanation:The orbital velocity is given by where, G be the universal gravitational constant, M be the mass of earth and r be the distance Calculate The Speed In M/s At Which The Moon Revolves Around The Earth. He emails the doctor a copy of this patients records. When viewed from the north celestial pole (i.e., from the approximate direction of the star Polaris) the Moon orbits Earth anticlockwise and Earth orbits the Sun anticlockwise, and the Moon and Earth rotate on their own axes anticlockwise. The moon is 384,000 km away from the Earth. Earths period of gyration is an astronomical day, and the tropical radius of the Earth is around 6378 km. Earth and the Moon orbit about their barycentre (common centre of mass), which lies about 4,670km (2,900mi) from Earth's centre (about 73% of its radius), forming a satellite system called the EarthMoon system. D. It helped reveal changes in the position and appearance of celestial objects. Even at this rapid As was discovered by Jacques Cassini in 1722, the rotational axis of the Moon precesses with the same rate as its orbital plane, but is 180 out of phase (see Cassini's Laws). The centripetal acceleration of moon will be. The best answers are voted up and rise to the top, Not the answer you're looking for? While talking in days, the moon takes roughly 27 days to complete one rotation on its axis. This is an approximation that only holds true when the orbiting body is of considerably lesser mass than the central one, and eccentricity is close to zero. Something went wrong. If the Moon had gravity as strong as the Earth's, and a magnetic field, could it have supported life? In this case, you add the distance from the center of the Earth to the surface of the Earth, 6.38 10 6 meters, to the satellites height above the Earth. [2], This law implies that the body moves slower near its apoapsis than near its periapsis, because at the smaller distance along the arc it needs to move faster to cover the same area. C. Probability influences whether or not a researcher can claim statistical significance. war. Suppose that the Moon orbits around the Earth in a circle of radius r = 3.84 x 10^8 m, determine the period, that is the time it takes for the Moon to go around the Earth one time. What is the car's acceleration? The line of nodes, the intersection between the two respective planes, has a retrograde motion: for an observer on Earth, it rotates westward along the ecliptic with a period of 18.6 years or 19.3549 per year. One cycle takes $T=27.32$ days to complete. Waterfalls also produce infrasonic eaves. The maximum (instantaneous) orbital speed occurs at periapsis (perigee, perihelion, etc. Regarding tropopause, surface temperatures and latent heat release in clouds mostly influence the troposphere. At its WebAnswer: 1018.26 m/s. In this article, we will give the exact speed of the moons orbit in detail. Find (a) the mean orbital speed of the moon and (b) its centripetal acceleration. 2. Several theories vie for dominance but most agree on one thing Earth's Moon was born from destruction. How long does it take the Moon to move its own diameter through the star field? * For the Moon, the average velocity around the Earth is given. Same with the moon. For the instantaneous orbital speed of a body at any given point in its trajectory, both the mean distance and the instantaneous distance are taken into account: where is the standard gravitational parameter of the orbited body, r is the distance at which the speed is to be calculated, and a is the length of the semi-major axis of the elliptical orbit. WebThe orbit of the moon around the earth is approximately circular, with a mean radius of 3.85*10 8 m. It takes 27.3 days for the moon to complete one revolution around the Scientists call this synchronous rotation. Why would it be helpful for animals to be able to detect them? Carter approved a controversial takeover of the Iranian Embassy in the US and expelled all their diplomats To subscribe to this RSS feed, copy and paste this URL into your RSS reader. At its farthest point, it is 405,696km away. It is about 27.32 days. It revolves around the earth in 27.3 days. WebThe Moon orbits Earth at an average distance of 384,400 km (238,900 mi), or about 30 times Earth's diameter. Orbital Velocity (km/s or miles/s) - The average velocity or speed of the planet as it orbits the Sun, in kilometers per second or miles per second. If the moon travels in a circular orbit of radius 5 x 105 km, (a) What is the Mass of the planet in kg ? Moon's orbit and sizes of Earth and Moon to scale. A. Calculate the speed of moon moving around the earth. Now, you know the speed of moon around Earth, lets know how to find the speed of the moons orbit. Explanation: I received this question on USA Test Prep and this was the answer so the person above was correct. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter or, if one body is much more massive than the other bodies of the system combined, its speed relative to the center of mass of the most massive body. And as it moves away, its orbital period increases and Earths rotation slows down. As per his explanation if the temperature of universe is too high then the electromagnetic force and weak nuclear force will merge and give the interaction as Electroweak force. The orbit changes over the course of the year so the distance from the Moon to Earth roughly ranges from 357,000 km to 407,000 km, giving velocities ranging from 1.100 to 0.966 km/s. Without further delay lets know the. Molly Wasser Finally, because the Moon is only about 60 Earth radii away from Earth's centre of mass, an observer at the equator who observes the Moon throughout the night moves laterally by one Earth diameter. WebHow small is the Moon compared to Earth? No because he is sharing confidential patient information. The only three regular polygons that tessellate are _____ equilateral triangles, squares, and regular hexagons. If the thumb of the right hand points to the north celestial pole, its fingers curl in the direction that the Moon orbits Earth, Earth orbits the Sun, and the Moon and Earth rotate on their own axes. Published: December 2, 2022. The orbit of the moon around the Earth is not a perfect circle so the distance varies a little. 6). While it's true that the Moon Is there an identity between the commutative identity and the constant identity? Now, you know the speed of moon around Earth, lets Are Tucker's Kobolds scarier under 5e rules than in previous editions? The gravitation force of the Earth is very essential to keep the Moon in motion in one orbit. Specific orbital energy is constant and independent of position.[1]. C. It enabled the identification of elements present in various celestial objects. So, angular momentum = (7.4x10^22 kg) x 1011 m/s x (380,000,000 m) Angular momentum = 2.84 x 10^34 km2s. With this speed, the moon completes one revolution around the Earth once every 27.322 days. This topic will explain the concept of it with orbital speed formula. Changing orbit Observers on Earth might notice that the moon essentially keeps the same side facing our planet as it passes through its orbit. Hence, the temperature has remained quite consistent. [17] Conservation of angular momentum means that Earth's axial rotation is gradually slowing, and because of this its day lengthens by approximately 24 microseconds every year (excluding glacial rebound). James Maxwell. simple compound complex compound-complex, Given def is 4 times smaller than abc find the length perimeter of abc and def. The solid Earth responds quickly to any change in the tidal forcing, the distortion taking the form of an ellipsoid with the high points roughly beneath the Moon and on the opposite side of Earth. 9). Lunar Atmosphere Diurnal temperature range (equator): 95 K to 390 K (~ -290 F to +240 F) Total mass of atmosphere: ~25,000 kg Surface pressure (night): 3 x 10-15bar (2 x 10-12torr) This is where the solar winds originate. Objects move fastest at perihelion (closest approach to the Sun) and slowest at aphelion (furthest distance from the Sun). The answer is that which i wrote yesterday on comment's. the interaction between electromagnetic force and weak nuclear force is also known as Electroweak interaction. Explanation: Approaching the orbit of the Moon around the Earth to a circular orbit (or circular path), we can use the equation of the speed of an object with uniform circular motion: Where: is the speed of travel of the Moon around the Earth. This can be used to obtain a more accurate estimate of the average orbital speed:[4]. The Moon orbits the Earth at a mean distance of 384,400 Km with a mean orbital velocity of 1.023 Km/S which is thrice the speed of sound. About 16 minutes after liftoff, Chandrayaan-3 separated from the LVM3 as planned and entered orbit around Earth, increasing its speed until it can be hurled into the moon's orbit. Each Lunar day lasts for 14 earth days, as does each Lunar night, as it takes around one month Tour several visually compelling sites on the Moon. The Moon orbits the Earth at a mean distance of 384,400 Km with a mean orbital velocity of 1.023 Km/S which is thrice the speed of sound. As a result, the moon does not seem to be spinning but appears observed from Earth to be keeping almost perfectly still. full access to public libraries C- income tax The nodes are moving west by about 19 per year. 7). Thats triple speed of sound. In ideal two-body systems, objects in open orbits continue to slow down forever as their distance to the barycenter increases. The variance in the Moon's orbital distance corresponds with changes in its tangential and angular speeds, as stated in Kepler's second law. It was observed by NASA's Lunar Reconnaissance Orbiter. Here, we will discuss the speed of the moons orbit. The anomalistic month is the time between perigees and is about 27.55 days. The string makes one There is a net energy change So, the average speed of the Moon around the Earth is 1022.90 m/s. The gravitational attraction that the Moon exerts on Earth is the cause of tides in both the ocean and the solid Earth; the Sun has a smaller tidal influence. Earth turns on its own axis about once every 24 hours (or, to be precise, every 23 hours, 56 minutes and 4 seconds). 4 1 0 3 m / s 2. 5). WebGiven that the Moon's period about the Earth is 27.32 days and the distance from the Earth to the Moon is 3.84 10 8 m 3.84 108m estimate the mass of the Earth. The average speed is given by : Where. Something went wrong. Share. Same with the moon. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. dissolved nutrients, Why does a raindrop accelerate as it falls to the earth? [8] It would require an inclination of this earlier orbit of about 10 to the equator to produce a present inclination of 5 to the ecliptic. Stack Exchange network consists of 182 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Why is there only one full moon a month? To learn more, see our tips on writing great answers. speed equals orbital radius times the orbital angular speed Explanation: The moon is 384,000 km away from the Earth. About 16 minutes after liftoff, Chandrayaan-3 separated from the LVM3 as planned and entered orbit around Earth, increasing its speed until it can be hurled Which set of instructions shows the inverse operations? Sheldon Glashow (a) 2.17 m/s 2 (c) 2.99 m/s 2 (e) 4.05 m/s 2 (b) 2.60 m/s 2 (d) 3.42 m/s 2 11. C. Nonsense! Does the moon orbit faster than Earth? , lets know how to find the speed of the moons orbit. WebThis means all moonlight we see is 1.255 seconds old, and a round-trip between the Earth and moon at light speed takes about 2.51 seconds. This is because A. the mass of the rock is independent of gravity. where v is the orbital velocity, a is the length of the semimajor axis, T is the orbital period, and = GM is the standard gravitational parameter. Transcribed image text: An unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 82 km. The Artemis generation will explore farther than weve ever gone before. The lunar orbit's major axis the longest diameter of the orbit, joining its nearest and farthest points, the perigee and apogee, respectively makes one complete revolution every 8.85 Earth years, or 3,232.6054 days, as it rotates slowly in the same direction as the Moon itself (direct motion) meaning precesses eastward by 360. Pros and cons of "anything-can-happen" UB versus allowing particular deviations from sequential progran execution, Explaining Ohm's Law and Conductivity's constance at particle level. When the Sun reaches that point, the centre of the Sun rises at the lunar north pole and sets at the lunar south pole. B. the weight of the rock is independent of gravity. A) because it gains mass during its travel B) because the force of gravity pulls on the drop C) because it gets further from the cloud where it started D) because fewer forces are present to slow it down as it drops. Lets calculate the speed of the moons orbit.