Aracquetball strikes a wall with a speed of 30 m/s and rebounds in the opposite direction with a speed of 26 m/s. the collision takes 20 ms. what is the average acceleration of the ball during the collision with the wall?

The average acceleration of the ball during the collision with the wall is

Explanation:

Known Data

We will asume initial speed has a negative direction, , final speed has a positive direction, , and mass .

Initial momentum

final momentum

Impulse

Average Force

Average acceleration

, so .

Therefore,

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