(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 9.0 m above its starting point, how much thermal energy (in J) was generated by friction? (Enter a number.) (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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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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I just need help with part b and c

(a) 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.)
21.567
(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 9.0 m above its starting point, how much thermal energy (in J) was generated by friction? (Enter a
number.)
X J
(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.)
Transcribed Image Text:(a) 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.) 21.567 (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 9.0 m above its starting point, how much thermal energy (in J) was generated by friction? (Enter a number.) X J (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.)
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