The cyclist, moving evenly, covered 9 km in 30 minutes. Find the cyclist’s speed in m / s.

Given:

t = 30 minutes – the time of the cyclist’s movement;

S = 9 kilometers – the distance covered by the cyclist.

It is required to determine the speed of the cyclist v (m / s).

Since, according to the condition of the problem, the cyclist moved uniformly, then:

v = S / t = 9/30 = 0.3 kilometers per minute.

Now we will translate the obtained speed into meters per seconds, taking into account that 1 kilometer = 1000 meters, and 1 minute = 60 seconds:

v = 0.3 km / min = 0.3 * 1000/60 = 300/600 = 5 meters per second.

Answer: the cyclist was moving at a speed of 5 m / s.