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A 91 kg crate, starting from rest, is pulled across a floor with a constant horizontal...

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Physics

A 91 kg crate, starting from rest, is pulled across a floor witha constant horizontal force of 340 N . For the first 15m the flooris frictionless, and for the next 15 m the coefficient of frictionis 0.22.

What is the final speed of the crate?

Answer & Explanation Solved by verified expert
4.1 Ratings (718 Votes)
First we need to find the accelerations across the two different surfaces Well call them a1 across frictionless floor and a2 across floor with friction To find a1 all we need is our good old friend Net Fma for the first part of the problem the    See Answer
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