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Mu naught
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Say I have an object which has been shot away from Earth at some initial velocity, and I want to find out how long it will take until it's velocity is zero.
If it is moving fast enough, the approximation v = v0 + aΔt doesn't work because the acceleration due to gravity is changing as a function of r. I want to describe v as a function of t, set v equal to zero and solve for t.
This is the attempt I have made to solve this:
[PLAIN]http://img204.imageshack.us/img204/2879/problemw.png
Any suggestions?
If it is moving fast enough, the approximation v = v0 + aΔt doesn't work because the acceleration due to gravity is changing as a function of r. I want to describe v as a function of t, set v equal to zero and solve for t.
This is the attempt I have made to solve this:
[PLAIN]http://img204.imageshack.us/img204/2879/problemw.png
Any suggestions?
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