Determining change of momentum of a tennis ball

AI Thread Summary
To determine the change of momentum of a tennis ball colliding with a wall in a partially elastic collision with e=0.5, one must first calculate the speed after the collision using the coefficient of restitution. The basic momentum equation F.(t2-t1) = P2 - P1 is not applicable here due to the unknown time variables. Instead, the focus should be on the relationship between initial and final velocities influenced by the elasticity of the collision. Understanding these principles is crucial for accurately calculating the change in momentum.
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:

(try using the X2 icon just above the Reply box :wink:)
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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