Question: An 3 . 0 kg object is dropped from a height of 4 0 0 0 km above a planet with mass 4 . 0

An 3.0kgobject is dropped from a height of 4000km above a planet with mass 4.0x 10^24kg and radius of 5.0x 10^6m.
a)What is the acceleration due to gravity on this planet?
b) What will be its kinetic energy just as it strikes the surface?

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