A racquetball 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? A)0 m/s² B)200 m/s² C)2800 m/s² D)1500 m/s² E)1300 m/s²

Question

Quizplus · Accepted Answer

We can use the formula for average acceleration during the collision:

average acceleration = (change in velocity) / time

The change in velocity is the difference between the final velocity (after the collision) and the initial velocity (before the collision):

change in velocity = final velocity - initial velocity = 26 m/s - (-30 m/s) = 56 m/s

The time is given as 20 ms, but we need to convert it to seconds:

time = 20 ms / 1000 ms/s = 0.02 s

Now we can plug in these values into the formula:

average acceleration = (change in velocity) / time = 56 m/s / 0.02 s = 2800 m/s^2

Therefore, the answer is C.

A Racquetball Strikes a Wall with a Speed of 30