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Chapter 11: Q. 13 (page 287)

A 250gball collides with a wall. FIGURE EX11.13 shows the ball’s velocity and the force exerted on the ball by the wall. What is vfx, the ball’s rebound velocity?

Short Answer

Expert verified

The rebound velocity of ball6m/s.

Step by step solution

01

Given information  

We need to find the rebound velocity of ball.

02

Simplify 

By using the impulse-momentum theorem, we can assume collisions are elastic. Initial velocitiy vix=-10m/sshowm in figure left and in the right figure Jx=(500N×0.008s)=4Ns

So we have

pfx=pix+Jxmvfx=mvix+Jx/:mvfx=vix+Jxm=-10m/s+4Ns0.250kg=6m/s.

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