Because of where they live, many people have to park their cars on a hill. One day, the owner of a SUV that weighs 5,440 lb parked it on a steep hill. Just for fun, he wanted to know the speed of his SUV at a point 55 ft lower than his usual starting point when the brakes on the car are released and the car is placed in neutral. Ignore frictional forces.

Because of where they live, many people have to park their cars on a hill. One day, the owner of a SUV that weighs 5,440 lb parked it on a steep hill. Just for fun, he wanted to know the speed of his SUV at a point 55 ft lower than his usual starting point when the brakes on the car are released and the car is placed in neutral. Ignore frictional forces.

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 10CQ: When a body slides down an inclined plane, does the work of friction depend on the body’s initial...

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Similar questions

When a body slides down an inclined plane, does the work of friction depend on the body’s initial speed? Answer the same question for a body sliding down a curved surface.
A child of mass m starts from rest and slides without friction from a height h along a curved waterslide (Fig. P5.46). She is launched from a height h/5 into the pool. (a) Is mechanical energy conserved? Why? (b) Give the gravitational potential energy associated with the child and her kinetic energy in terms of mgh at the following positions: the top of the waterslide, the launching point, and the point where she lands in the pool. (c) Determine her initial speed V0 at the launch point in terms of g and h. (d) Determine her maximum airborne height ymax in terms of h, g, and the horizontal speed at that height, v0x. (e) Use the x-component of the answer to part (c) to eliminate from the answer to part (d), giving the height ymax in terms of g, h, and the launch angle . (f) Would your answers be the same if the waterslide were not frictionless? Explain. Figure P5.46
Repeat the preceding problem, but including a drag force due to air of fdrag=bv .
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.18 and the push imparts an initial speed of 3.9 m/sm/s ? Express your answer to two significant figures and include the appropriate units.
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