4. A tennis ball falling straight downwards hits the floor. At the time of interest, the ball is compressed with the center of the tennis ball still moving downwards but slowing down. The mass of the tennis ball is M and the radius of the tennis ball is R. Note: you do not always need all the information given in a problem. a. What is the direction (up/down/zero) of acceleration of the center of the tennis ball? FBD b. In the box, draw the free body diagram showing the forces acting on the ball. To the right of the "-", draw an arrow labeled "Ma" in the direction of the acceleration (or write "0" if the acceleration is zero). c. What is true of the magnitude of the normal force that the ground exerts on the ball during the bounce? Hint: Use Newton's Second Law. The normal force is equal to the weight. The normal force is smaller than the weight. • The normal force is larger than the weight. 11

4. A tennis ball falling straight downwards hits the floor. At the time of interest, the ball is compressed with the center of the tennis ball still moving downwards but slowing down. The mass of the tennis ball is M and the radius of the tennis ball is R. Note: you do not always need all the information given in a problem. a. What is the direction (up/down/zero) of acceleration of the center of the tennis ball? FBD b. In the box, draw the free body diagram showing the forces acting on the ball. To the right of the "-", draw an arrow labeled "Ma" in the direction of the acceleration (or write "0" if the acceleration is zero). c. What is true of the magnitude of the normal force that the ground exerts on the ball during the bounce? Hint: Use Newton's Second Law. The normal force is equal to the weight. The normal force is smaller than the weight. • The normal force is larger than the weight. 11

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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