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

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

42.6 m

If, in actuality, a 870–kg car with an initial speed of 104 km/h is observed to coast up a hill to a height 31.9 m above its starting point, how much thermal energy was generated by friction?

9.11×104 J

What is the average force of friction if the hill has a slope 7.7° above the horizontal?????

Expert Solution

milcah answered 2 years ago

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