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

Mike is dragging a 20.0 kg crate across the floor. If he exerts 40 N force upon the crate and there is a 25 N frictional force opposing the crate's motion, how fast will the crate be moving after 2.0 seconds if it is initially at rest?

2. Relevant equations

F_{NET}=ma

3. The attempt at a solution

I used F_{NET}=ma to solve for the acceleration as follows:

F_{PC}-F_{FC}=ma

40-25=20a

15=20a

a=0.75m/s^{2}

Then here's where I'm not sure if this is correct: I multiplied the acceleration 0.75m/s^{2}by 2.0 seconds to get 1.5m/s^{2}.

Is this the correct answer for the question: How fast will the crate be moving after 2.0 seconds?

Thanks.

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# Force Problem

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