Asked by kelly
A rocket is launched straight up from the earth's surface at a speed of 1.80×104 m/s^2.
a)What is its speed when it is very far away from the earth?
a)What is its speed when it is very far away from the earth?
Answers
Answered by
bobpursley
Energy dictates that some of the KE will go to increasing gravitational PE.
initial KE=finalKE+(GMe/re-GMe/infinity)
initialKE=finalKe+GMe/re
solve for final Ke, then final velocity
initial KE=finalKE+(GMe/re-GMe/infinity)
initialKE=finalKe+GMe/re
solve for final Ke, then final velocity
Answered by
kelly
is Me the mass of the earth?
and re the radius of the earth?
and re the radius of the earth?
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