v = 15 ms The Smart Car shown in the picture has speed and mass as shown. 860 kg a If the driver suddenly applies the brakes and brings the car to a stop in 3.0 s, what is the work done a by the friction force between the tires and the road surface? b What is the average friction force during the braking action? Suppose the car drives up a hill whose altitude is 16 m above the car's starting point. What is the change in potential energy of the car in going up the hill from its starting point? If the car in the previous problem begins to slide down the ice-covered and (magically) frictionless hill, what will its speed be when it is at an altitude of 8.0 m? e. What will its speed be when it reaches the bottom of the hill?

v = 15 ms The Smart Car shown in the picture has speed and mass as shown. 860 kg a If the driver suddenly applies the brakes and brings the car to a stop in 3.0 s, what is the work done a by the friction force between the tires and the road surface? b What is the average friction force during the braking action? Suppose the car drives up a hill whose altitude is 16 m above the car's starting point. What is the change in potential energy of the car in going up the hill from its starting point? If the car in the previous problem begins to slide down the ice-covered and (magically) frictionless hill, what will its speed be when it is at an altitude of 8.0 m? e. What will its speed be when it reaches the bottom of the hill?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 26P: Suppose a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30 of the...

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