(a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 92.0 km/h? Em (b) If, in actuality, a 750 kg car with an initial speed of 92.0 km/h is observed to coast up a hill to a height 16.0 m above its starting point, how much thermal energy was generated by friction? :1 (c) What is the average force of friction if the hill has a slope 2.50 above the horizontal? E N (down the slope)