Chapter 2, Problem 1TS

A tennis ball travels the full length of the court, $24\text{m}$ , in $0.5\text{s}$ . What is the average speed?

To determine

The average speed of the tennis ball.

Answer to Problem 1TS

The average speedof the tennis ball is $s=48\text{m}/\text{s}$

Explanation of Solution

Given info: Distance covered is $24\text{m}$ and time taken is $0.5\text{s}$ .

Write the expression for average speed.

$s=\frac{d}{t}$

Here,

$d$ is the distance covered

$t$ is the time taken

Substitute $24\text{m}$ for $d$ and $0.5\text{s}$ for $t$ in the above expression to get $s$.

$\begin{array}{c}s=\frac{24\text{m}}{0.5\text{s}}\\ s=48\text{m}/\text{s}\end{array}$

Conclusion:

Therefore, the average speed is $s=48\text{m}/\text{s}$ .