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April 18, 2014

Homework Help: Physics

Posted by lizgreene52 on Monday, November 19, 2012 at 9:32pm.

Sukey is riding her bicycle when she sees a fallen tree 42 m ahead. If the coefficient of friction is .36 and she is travelling at 50 km/ hr and she and the bike have a mass of 95 kg, how much stopping distance does she need. I got as far as her speed equals 13.9 m/sec. Do we need her Normal force (95 x -9.8m/sec 2) = 930N.

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