Asked by kelly

Planet Z is 1.00×10^4 km in diameter. The free-fall acceleration on Planet Z is 10.0 m/s^2.
a)What is the mass of Planet Z?
b)What is the free-fall acceleration 9000 km above Planet Z's north pole?
Answered by bobpursley
"g"=GM/radius^2 solve for M

Then, the second: "g"=GM/(radius+9000km)^2
Answered by Anonymous
1.28*(10)^18
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