Answered: If the coefficient of kinetic friction…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 14P: An object of mass m is dropped from the roof of a building of height h. While the object is falling,...

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A.) If the coefficient of kinetic friction between a 28 kgkg crate and the floor is 0.38, what horizontal force is required to move the crate at a steady speed across the floor?

Express your answer to two significant figures and include the appropriate units.

F= ______________ N

B.) What average force is required to stop a 1100 kgkg car in 8.0 ss if the car is traveling at 90 km/hkm/h ?

Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value if the direction of the force is in the direction opposite to the initial velocity.

F= ______________ N

C.) A flatbed truck is carrying a heavy crate. The coefficient of static friction between the crate and the bed of the truck is 0.73.

What is the maximum rate at which the driver can decelerate and still avoid having the crate slide against the cab of the truck?

Express your answer using two significant figures.

|a|=___________

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