Using the Work-KE Theorem, calculate the ratio of the forces needed to bring a 1545-kg car to a stop from a speed of 89.2 km. The top force is for a stopping distance of 1.83 m (very real distance for an unplanned stop) and the bottom force is for a stopping distance of 139 m (a fairly typical distance for a non-panic stop). Calculate the two forces separately before calculating the ratio.

University Physics Volume 1
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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 54P: A 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface...
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Using the Work-KE Theorem, calculate the ratio of the forces needed to bring a 1545-kg car to a stop
from a speed of 89.2 km. The top force is for a stopping distance of 1.83 m (very real distance for an
unplanned stop) and the bottom force is for a stopping distance of 139 m (a fairly typical distance for a
non-panic stop). Calculate the two forces separately before calculating the ratio.
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your answer
Transcribed Image Text:Using the Work-KE Theorem, calculate the ratio of the forces needed to bring a 1545-kg car to a stop from a speed of 89.2 km. The top force is for a stopping distance of 1.83 m (very real distance for an unplanned stop) and the bottom force is for a stopping distance of 139 m (a fairly typical distance for a non-panic stop). Calculate the two forces separately before calculating the ratio. Add your answer
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