A motor car running at the rate of 7 m s' can be stopped by the brakes in 10 m. Prove that the total resistance to the motion, when the brakes are on, is one fourth of the weight of the car.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter4: The Laws Of Motion
Section: Chapter Questions
Problem 12CQ
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A motor car running at the rate of 7 m s' can be stopped by the brakes in 10 m. Prove
that the total resistance to the motion, when the brakes are on, is one fourth of the
weight of the car.
Transcribed Image Text:A motor car running at the rate of 7 m s' can be stopped by the brakes in 10 m. Prove that the total resistance to the motion, when the brakes are on, is one fourth of the weight of the car.
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