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August 5, 2015

Homework Help: physics

Posted by Anonymous on Tuesday, June 10, 2014 at 3:21pm.

(a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible
and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h
is observed to coast up a hill to a height 22.0 m above its starting point, how much thermal energy
was generated by friction? (c) What is the average force of friction if the hill has a slope 2.5
above the horizontal?

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