7. Friction, Inclines, Systems
Inclined Planes
8:34 minutes
Problem 4.69
Textbook Question
Textbook QuestionA city planner is working on the redesign of a hilly portion of a city. An important consideration is how steep the roads can be so that even low-powered cars can get up the hills without slowing down. A particular small car, with a mass of 920 kg, can accelerate on a level road from rest to 21m/s (75km/h) in 14.5 s. Using these data, calculate the maximum steepness of a hill.
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