A 95.0 kg football player is standing on a sheet of ice, i.e., there is negligible friction betweentheir feet and the ground. A 0.400 kg football is travelling horizontally at 12.0 m/s towardsthe football player just before they try to catch the ball. (a) If they successfully catch the ball,then how fast does the player and the ball move horizontally after it is caught? (b) If the ballhits the player and bounces off of their chest moving at 8.50 m/s in the opposite direction,then what is the speed of the player after the ball bounces off of their chest? (c) Include adiagram of each of the situations.

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Answered: A 95.0 kg football player is standing…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 80P: How much fuel would be needed for a 1000-kg rocket (this is its mass with no fuel) to take off from...

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A young girl is riding a bicycle that has a total mass (including the kid) of 21.2 kg. The girl is moving at 5.99 m/s on a flat road when suddenly she slams on the brakes and skids to a stop in 8.22 meters. What was the magnitutde of the average force due to friction acting on the bicycle? Remeber, the magnitude of a force is always positive. Assume a constant friction force measured in Newtons and 3 significant digits in your answer.
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A child with mass of 16.5 kg stands on the edge of a park bench and leaps into the air. Her initial speed is 2.4 m/s directed at an angle of 30 degrees above the horizontal. After 0.28 seconds what is the horizontal component of her velocity in m/s?
As a protest against the umpire’s calls, a baseball pitcherthrows a ball straight up into the air at a speed of 20.0 m/s. Inthe process, he moves his hand through a distance of 1.50 m.If the ball has a mass of 0.150 kg, find the force he exerts onthe ball to give it this upward speed.
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