10 seconds before the finish line, the cyclist’s speed is 21.6 km / h, and at the finish line – 54 km / h.

10 seconds before the finish line, the cyclist’s speed is 21.6 km / h, and at the finish line – 54 km / h. determine the acceleration with which the cyclist finished.

V1 = 21.6 kilometers per hour = 6 meters per second – the initial speed of the cyclist;

V2 = 54 kilometers per hour = 15 meters per second – the final speed of the cyclist;

t = 10 seconds – the period of time during which the cyclist’s speed changed from v1 to v2.

It is required to determine a (meter per second squared) – the acceleration of the cyclist.

To determine the acceleration of a cyclist, you need to use the following formula:

t = dV / a, from here we find:

a = dV / t = (V2 – V1) / t = (15 – 6) / 10 = 9/10 = 0.9 m / s2.

Answer: the acceleration of the cyclist is 0.9 m / s2.