The diameter of a locomotive wheel is 180 cm. The wheel makes 500 revolutions in 2.5

The diameter of a locomotive wheel is 180 cm. The wheel makes 500 revolutions in 2.5 minutes. With what speed the locomotive goes.

Let’s convert centimeters to meters for the convenience of calculations:

180 cm = 1.8 meters.

Let’s determine what distance the locomotive travels in 2.5 minutes:

1.8 * 500 = 900 meters.

Now let’s determine what distance the locomotive travels in 1 minute:

900: 2.5 = 360 m / min – locomotive speed. Let’s translate its speed into kilometers per hour:

360 * 0.06 = 21.6 km / h – the speed of the locomotive.

Answer: the speed of the locomotive is 21.6 km / h.