A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual contact with the bat lasts 0.45 s, what is the ratio of the magnitude of the average acceleration of the ball to its original speed? A) 6.7 s^-¹ B) 4.4 s^-1 C) 2.2 s^-1 D) 0.15 s^-1

Question

Quizplus · Accepted Answer

The change in velocity is three times the original speed (since the direction is reversed and speed is doubled). The average acceleration is the change in velocity divided by the time of contact, so the ratio is 3/0.45 = 6.7 s^-1.

A Baseball Is Hit with a Bat And, as a Result