Posted by **Matt** on Tuesday, November 29, 2011 at 8:57pm.

A 2.9 × 103 kg car accelerates from rest at

the top of a driveway that is sloped at an

angle of 16.0 with the horizontal. An average

frictional force of 4.2×103 N impedes the car’s

motion so that the car’s speed at the bottom

of the driveway is 4.6 m/s.

The acceleration of gravity is 9.81 m/s2 .

What is the length of the driveway?

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