What Is the Speed and Acceleration of a Soccer Ball After a Collision?

AI Thread Summary
A 60-kg soccer player heads a 0.45 kg ball descending at 25 m/s while moving upward at 4.0 m/s. The discussion centers on calculating the speed of the ball immediately after an elastic collision and determining its average acceleration during a 20 ms contact time with the player's head. Participants emphasize the need for the original poster to provide their attempt at solving the problem before receiving assistance. The conversation highlights the importance of understanding the principles of momentum and collision in physics. Engaging with the problem-solving process is essential for effective learning in physics discussions.
hazex36
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The questions is
A 60-kg soccer player jumps vertically upwards and heads the .45kg ball as it is descending vericallywith a speed of 25 m/s. If the player was moving upward with a speed of 4.0m/s just before the impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? If the ball is in contact with the palyer's head for 20ms, what is the average acceleration of the ball?

thanks in advance
 
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hazex36 said:
The questions is
A 60-kg soccer player jumps vertically upwards and heads the .45kg ball as it is descending vericallywith a speed of 25 m/s. If the player was moving upward with a speed of 4.0m/s just before the impact, what will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? If the ball is in contact with the palyer's head for 20ms, what is the average acceleration of the ball?

thanks in advance

Hello hazex36! Welcome to Physicsforums. :smile:

You have to show us your attempt at a solution before we are allowed to help.
 

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