Posted by **Lyn** on Friday, January 25, 2013 at 6:27pm.

A crate is initially at rest on a rough, horizontal floor. The crate moves in a straight line as it is pushed resulting in the crate speeding up at a constant rate of 3.89 m/s2. After a while, the crate is no longer being pushed and the crate slows down at a constant rate of 5.48 m/s2. The crate comes to rest a total distance 51.6 m away from its starting position. For how long (amount of time) was the crate pushed? Model this problem as having two constant accelerations as described above. Write your answer to three significant figures.

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