An athlete completes a 1500m race in 870s. Calculate the athlete's average speed in: A) m/s B)km/s

Speed is the distance traveled in unit time. Here we need
to find the average speed in terms of m/s and km/s.

It is
given that the athlete travels 1500 m in 870 s. To find speed in m/s, we divide 1500 by
870. 1500/870 = 1.724. The average speed of the athlete in m/s is 1.724
m/s.

In terms of km/s, we have to first express the
distance traveled in km. 1500 m is 1.5 km. The average speed is 1.5/870 = 1.724*10^-3
km/s

The average speed of the athlete is
1.724 m/s and 1.724*10^-3 km/s