Hi I got this question, it looks like its simple. But I don't know if I've done it right or not? Please help me check it.(adsbygoogle = window.adsbygoogle || []).push({});

A 2kg rock is heading straight for a space station at a speed of 100 m/s. The crew plan to break the rock up into small fragments by hitting it with a rocket of 3kg travelling at 1000 m/s. If it takes 1.0 *10^6 J to fragment the rock, show wether or not their plan can succeed. (Speed are given in the station' s frame.

I simply said that the rocket will have a kinetic energy of 1/2mv^2=1/2*3*1000^2=1.25*10^6 J. SO this is higher than the minimum energy required to break the rock, so the plan will work.

But it is so simple I think I've missed some information heere. Could somebody give me a little help please? Thank you

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# Homework Help: Fragmentation of a asteroid.

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