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Figure 9-47 gives an overhead view of the path taken by a

Chapter , Problem 22

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QUESTION:

Figure 9-47 gives an overhead view of the path taken by a 0.165 kg cue ball as it bounces from a rail of a pool table. The balls initial speed is 2.00 m/s, and the angle u1 is 30.0#.The bounce reverses the y component of the balls velocity but does not alter the x component. What are (a) angle u2 and (b) the change in the balls linear momentum in unit-vector notation? (The fact that the ball rolls is irrelevant to the problem.)

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QUESTION:

Figure 9-47 gives an overhead view of the path taken by a 0.165 kg cue ball as it bounces from a rail of a pool table. The balls initial speed is 2.00 m/s, and the angle u1 is 30.0#.The bounce reverses the y component of the balls velocity but does not alter the x component. What are (a) angle u2 and (b) the change in the balls linear momentum in unit-vector notation? (The fact that the ball rolls is irrelevant to the problem.)

ANSWER:

Step 1 of 4 a) The vertical component of initial velocity is given by, The vertical component of final velocity is given by, The vertical component of initial velocity and the final velocity have the same magnitude but they are in opposite directions. That is, So, That is, Implies, The angle is .

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