(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A wooden crate is pushed across a concrete floor at 5 m/s and released. It slides to a stop after moving a short distance. The same crate is filled until it weighs twice as much as it previously did and again slid across the floor at 5 m/s when released. The stopping distance for the crate will be...

a) 1/4 as far.

b) 1/2 as far.

c) the same distance.

d) twice as far.

e) four times as far.

3. The attempt at a solution

I thought this has something to do with kinetic energy. Since they both are released at 5 m/s but the latter has twice the mass, the second one should have twice the kinetic energy?

Therefore, I thought it would travel twice as far.

However, the answer given is: c) the same distance. Is this true? And if so, why?

Thanks. =)

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# Homework Help: Pushing a Wooden Crate

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