Question

3. A tennis ball is hit back and forth between two players. If it takes 2.3 s for

the ball to go from one player to the other, what are the period and
frequency of the ball's motion?

Answer 1

Time period of ball's motion is 4.6 s

Frequency of ball's motion is 0.22 Hz

Step-by-step explanation:

In this problem, Time period is define as the time taken by the ball to come back to its original position.

Let A be the player who first hits the ball towards the player B. We know that ball takes 2.3 s to travel from player A to player B. It takes same time to come back to player A from player B. Thus,

Time period of ball's motion = 2 x 2.3 s = 4.6 s

Frequency is defined as the occurrence of any event per unit time. In this case, the frequency of the ball's motion is given by :

Frequency =
`(1)/(Time\ Period)`

Frequency =
`(1)/(4.6)` = 0.22 Hz