# The cyclist travels 5 m / s. How many full revolutions does the wheel make in 5 seconds if the circumference of this wheel is 125 cm.

January 15, 2021 | education

| To solve the problem, you first need to determine the distance that the cyclist travels in 5 seconds.

To do this, we multiply the cyclist’s speed by time.

We get:

5 * 5 = 25 meters.

We translate this distance into centimeters.

Since 1 meter is 100 centimeters, then 25 meters:

25 * 100 = 2500 centimeters.

We find the number of turnovers.

To do this, we divide the distance traveled by the cyclist in 5 seconds by the radius of the circle of his wheel.

In this case, we get:

2500/125 = 20 turns.