A 80-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 22 m/s. (Note that the force of gravity may be ignored during the brief collision time.) (a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? m/s (b) If the ball is in contact with the player's head for 25 ms, what is the average acceleration of the ball? m/s2
A 80-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 22 m/s. (Note that the force of gravity may be ignored during the brief collision time.) (a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? m/s (b) If the ball is in contact with the player's head for 25 ms, what is the average acceleration of the ball? m/s2
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter8: Momentum And Collisions
Section: Chapter Questions
Problem 22P: A tennis ball of mass mt is held just above a basketball of mass mb, as shown in Figure P8.22. With...
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A 80-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 22 m/s. (Note that the force of gravity may be ignored during the brief collision time.)
(a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic?
m/s
(b) If the ball is in contact with the player's head for 25 ms, what is the average acceleration of the ball?
m/s2
m/s
(b) If the ball is in contact with the player's head for 25 ms, what is the average acceleration of the ball?
m/s2
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