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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman
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You are standing on a sheet of ice that covers the

Chapter 10, Problem 20E

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QUESTION:

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo: there is negligible friction between your feet and the ice. A friend throws you a 0.400 kg ball that is traveling horizontally at 10.0 m/s. Your mass is 70.0 kg. (a) If you catch the ball, with what speed do you and the ball move afterward? (b) If the ball hits you and bounces off your chest, so afterward it is moving horizontally at 8.0 m/s in the opposite direction, what is your speed after the collision?

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QUESTION:

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo: there is negligible friction between your feet and the ice. A friend throws you a 0.400 kg ball that is traveling horizontally at 10.0 m/s. Your mass is 70.0 kg. (a) If you catch the ball, with what speed do you and the ball move afterward? (b) If the ball hits you and bounces off your chest, so afterward it is moving horizontally at 8.0 m/s in the opposite direction, what is your speed after the collision?

ANSWER:

Solution 20E Problem (a) Step 1: Mass of the person m = 70Kg 1 Mass of the ball m = 0.402 Velocity of the person before collision v = 0 1 Velocity of the ball v = 10.0m/s 2

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