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A car of mass 850 kg is initially moving at 110 km/h at the bottom of...

A car of mass 850 kg is initially moving at 110 km/h at the bottom of a large hill. Friction coefficient of 0.9 (rubber on dry asphalt)

a) How high up the hill can the car coast (engine disengaged), if work done by friction is negligible?

b) If, in actuality, the car is observed to coast up to a height of 22.o m above its starting point, how much thermal energy was generated by friction?

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