A rocket is launched and attains a speed of 5700_m/s when 63000_m above the surface of the Earth. If the engines then shut down, how much higher will the rocket rise before beginning its fall back toward the Earth? А. 4066000_m 1703000_m 2292000 m D. 2353000_m 3876000_m 3573000 m В. Е. C. F.

In 2014, the Rosetta space probe reached the comet Churyumov– Gerasimenko. Although the comet’s core is actually far from spherical, in this problem we’ll model it as a sphere with a mass of 1.0 x 1013 kg and a radius of 1.6 km. If a rock were dropped from a height of 1.0 m above the comet’s surface, how long would it take to hit the surface?

The gravitational acceleration (gravitational field) at the surface of a Planet A is 9 m/s². The radius and the mass of Planet B are both three times larger than those of Planet A. What is the gravitational acceleration on Planet B? O 81 m/s? O3 m/s² O 1 m/s2 O 27 m/s? O 9 m/s2

A planet has a radius of 4.00 x 10^6 m, and rotates so rapidly that an object on the equator feels only 10% of the weight that it feels at the poles. What is the speed of an object at the equator?

A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 5 x 1010 m (inside the orbit of Mercury), at which point its speed is 9.6 x 10* m/s. Its farthest distance from the Sun is beyond the orbit of Pluto. What is its speed when it is 6 x 1012 m from the Sun? (This is the approximate distance of Pluto from the Sun.) speed = m/s Additional Materials eBook O Show My Work (Optional)

A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.5 x 1010 m (inside the orbit of Mercury), at which point its speed is 9.2 x 104 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when it is 6 x 1012 m from the Sun? (This is the approximate distance of Pluto from the Sun.) speed = 690 X m/s Additional Materials eBook

a.) Find the net force on the Moon (mM=7.35×1022kg)(mM=7.35×1022kg) due to the gravitational attraction of both the Earth (mE=5.98×1024kg)(mE=5.98×1024kg) and the Sun (mS=1.99×1030kg)(mS=1.99×1030kg), assuming they are at right angles to each other (Figure 1). Express your answer to three significant figures and include the appropriate units. Fnet= __________ ____________   b.) Determine the direction of the net force. Express your answer to three significant figures and include the appropriate units. θ= ______________ ___________

On planet #2, you launch a projectile straight up from the ground at a speed of 28.5 m/s. The projectile reaches a maximum height of 66.2 m before falling back to the ground. What is the value of g for planet #2?     76.88 m/s^2     153.77 m/s^2     6.13 m/s^2     12.27 m/s^2

An object is thrown upward with a speed of 17.7 m/s on the surface of planet X where the acceleration due to gravity is 2.5 m/s2. What is the maximum height reached by the object? Answer: Check

A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.9 x 1010 m (inside the orbit of Mercury), at which point its speed is 9.3 × 104 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto. What is its speed when it is 6 x 10¹2 m from the Sun? (This is the approximate distance of Pluto from the Sun.) speed= i ! m/s