Answered: A ball going 20 m/s bounces off a wall…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A ball going 20 m/s bounces off a wall at a velocity of -12 m/s and goes the opposite direction. If this is a 2 kg and the time it touches the wall is .6 seconds, what is the average force on the wall?

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Expert Solution

Step 1

Answer: Given data,

Initial velocity of ball (u)=20m/s

Final velocity after bounce back (v)=-12 m/s

Negative sign represent that the final velocity is in the opposite direction of initial velocity.

So, we take final velocity is (v)=12m/s

Mass of ball (m)=2kg

Time of contact with the wall (t)=0.6 s

And we know momentum=mass×velocity

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