(1.1) A horizontal force pulls a mass of 2,25 kg a distance of 8 m across a rough horizontal surface with coefficient of friction 1/3 . The body moves with constant velocity and the only resisting force is due to friction. Find the work done against friction. (1.2) A body of mass 4 kg decreases its kinetic energy by 32 J. If initially it had a speed of 5 m/s, find its final speed
(1.1) A horizontal force pulls a mass of 2,25 kg a distance of 8 m across a rough horizontal surface with coefficient of friction 1/3 . The body moves with constant velocity and the only resisting force is due to friction. Find the work done against friction. (1.2) A body of mass 4 kg decreases its kinetic energy by 32 J. If initially it had a speed of 5 m/s, find its final speed
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 84AP: A cart is pulled a distance D on a flat, horizontal surface by a constant farce F that acts at an...
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(1.1) A horizontal force pulls a mass of 2,25 kg a distance of 8 m across a rough horizontal
surface with coefficient of friction 1/3
. The body moves with constant velocity and
the only resisting force is due to friction. Find the work done against friction.
(1.2) A body of mass 4 kg decreases its kinetic energy by 32 J. If initially it had a speed
of 5 m/s, find its final speed.
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