Question

A sprinter set a high school record in track and field, running 200.0 m in 20.5 s . what is the average speed of the sprinter in kilometers per hour? express your answer numerically in kilometers per hour.

Answer 1

Answer:

Thus, average speed of the sprinter is 0.5854 $\frac{km}{h}$.

Given:

Total distance = 200 m = 0.2 km

Total time = 20.5 second = $\frac{20.5}{60}$ hour = 0.3416 hour

To find:

Average speed = ?

Formula used:

Average speed = $\frac{Total distance}{Total time}$

Solution:

Average speed of the sprinter is given by,

Average speed = $\frac{Total distance}{Total time}$

Average speed = $\frac{0.2}{0.3416}$

Average speed = 0.5854 $\frac{km}{h}$

Thus, average speed of the sprinter is 0.5854 $\frac{km}{h}$.