Question

Two children are playing tetherball, in which a ball at the end of a cord spins around a pole. After a really good hit, the ball makes three complete revolutions in 2.0 s. What is the period of the ball's motion?

1) 0.67 s
2) 1.0 s
3) 1.5 s
4) 2.0 s

Answer 1

The period of the ball's motion is 0.67 s.

Step-by-step explanation:

The period of an object in motion is the time it takes for the object to complete one full cycle. In this case, the ball makes three complete revolutions in 2.0 s. To find the period, we divide the total time by the number of complete revolutions. So, the period of the ball's motion is 2.0 s / 3 = 0.67 s.