An astronaut exploring a distant solar system lands on an unnamed planet with a

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Anne

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radius of 3800 km.? An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 3800 km. When the astronaut jumps upward with an initial speed of 3.70 m/s, she rises to a height of 0.600 m.

What is the mass of the planet?
 
g = GM/r^2 is the formula for the acceleration on the astronaut due to the planet. Then set potential energy equal to kinetic energy to solve for g in terms of v and h. 0.5mv^2 = mgh.
 
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