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August 21, 2014

Homework Help: physics

Posted by julia on Wednesday, December 5, 2007 at 1:16pm.

A 20 kg child on roller skates, initially at rest, rolls 4 m down an incline at an angle of 30 degrees with the horizontal. If there is no friction between incline and skates, what is the kenetic energy of the child at the bottom of the incline? (g= 9.81 m/s^2)

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