Determining change of momentum of a tennis ball

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SUMMARY

The discussion focuses on determining the change of momentum of a tennis ball colliding with a wall in a partially elastic collision, characterized by a coefficient of restitution (e) of 0.5. The basic momentum equation, F.(t2-t1) = P2 - P1, is deemed insufficient due to the unknown time variables. Instead, participants emphasize the importance of using the coefficient of restitution to calculate the post-collision speed of the ball.

PREREQUISITES
  • Understanding of momentum and its mathematical representation
  • Knowledge of the coefficient of restitution in elastic collisions
  • Familiarity with basic physics concepts related to collisions
  • Ability to perform calculations involving speed and momentum
NEXT STEPS
  • Study the principles of elastic and inelastic collisions in physics
  • Learn how to calculate post-collision velocities using the coefficient of restitution
  • Explore the relationship between force, time, and momentum in collision scenarios
  • Investigate real-world applications of momentum change in sports physics
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Physics students, educators, and sports scientists interested in the mechanics of collisions and momentum transfer in sports contexts.

marijo
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A tennis ball is thrown perpendicularly to the wall. The ball collides with the wall at p momentum. If its collision is partially elastic where e= 0.5, then its change of momentum is



e= 0.5 which its a partly elastic collision



how do we determine the change of momentum? does it involve the basic equation of momentum; that F.(t2-t1) = P2 - P1

thanks before
 
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hi marijo! welcome to pf! :smile:

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marijo said:
how do we determine the change of momentum? does it involve the basic equation of momentum; that F.(t2-t1) = P2 - P1

no, because you have no idea what the times are! :rolleyes:

you need to use e= 0.5 to find the speed after the collision :wink:
 

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