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April 16, 2014

Homework Help: physics

Posted by janell on Monday, April 25, 2011 at 5:55pm.

2. a body of mass 20kg is released from rest t the top of a rough slope which is inclined at 30 degrees to the horizontal.six seconds later the body has a velocity of 21 m.s down the slope. find the resistance to motion in newtons experienced by the body?

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