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How high a hill can a car coast up (engine disengaged) if work done by friction...

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Basic Math

How high a hill can a car coast up (engine disengaged) if workdone by friction is negligible and its initial speed is 104km/h?

42.6 m

If, in actuality, a 870–kg car with an initial speed of 104 km/his observed to coast up a hill to a height 31.9 m above itsstarting point, how much thermal energy was generated byfriction?

9.11×104 J

What is the average force of friction if the hill has a slope7.7° above the horizontal?????

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