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 32P: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of...
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Question
a mass of 8 kg is traveling at a constant 10.1 m/s when a 45 N force starts to act in the opposite direction stopping the object after it has traveled. How much work was done by the force in stopping the object?
Expert Solution
Step 1
We know that the mass m = 8 kg traveling with the constant velocity of v = 10.1 m/s, and a force of F = 45 N is applied to stop the motion in the opposite direction of the motion.
We know that newton second law
-------------- eq1
a is the acceleration
We also know that the third equation of motion is given as
-------------- eq2
where v is the final velocity
u is the initial velocity and a is the acceleration
s is the distance travel
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