Question: (a) I need help with part C. How high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and

(a)

I need help with part C.

How high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 74.0 km/h? (Enter a number.) 21.557697153 m

(b)

If, in actuality, a 750 kg car with an initial speed of 74.0 km/h is observed to coast up a hill to a height 10.0 m above its starting point, how much thermal energy (in J) was generated by friction? (Enter a number.) 84949.074074074J

(c)

What is the average force of friction (DOWN the slope) if the hill has a slope 2.5 above the horizontal? (Enter your answer in N. Enter a number.) N

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