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October 30, 2014

Homework Help: physics

Posted by tanya on Wednesday, December 2, 2009 at 7:57pm.

a sled slides down a frictionless hill. if the sled starts from rest at the top, its speed is 7.5 m/s.

a.) on a second run , the sled starts with a speed of 1.5 m/s at the top.. will it end with less than 9 m/s, 9 m/s, or more than 9 m/s

b.) find the speed of the sled at the bottom of the hill after the second run

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