# Linear motion

Question asked by: rc2234

Asked on: 21 Sep 2009

What weight are the rocks? You need to know this to factor into the calculation together with of course the strength of gravity.

By: knowitall

Replied at: 27 Sep 2009

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Initial velocity,u=1000m/s, g=9.8m/s=10m/s(for simplicity), final velocity,v=0, height,h=?
We know, v^2=u^2-2gh
or, 0=1000^2-2*10*h
or, h=10^6/20
or, h=50000m=50Km.

By: psahu63

By: psahu63

*Date of comment: Tue, Aug 31st 2010***Ask a New Question**

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