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August 23, 2014

Homework Help: Physics(Please respond)

Posted by Hannah on Sunday, June 3, 2012 at 11:50am.

A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 83.9-kg water-skier has an initial speed of 6.3 m/s. Later, the speed increases to 10.1 m/s. Determine the work done by the net external force acting on the skier.

Would I use the equation

KEf-KE0 = 1/2mvf^2 - 1/2mv0^2 ?

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