Question

An athlete ran 800 metres in 1 minute 4 seconds. Find the speed per hour at which he ran
the race.​

Answer 1

Answer:

Step-by-step explanation:

Speed = distance / time

 

In m/s

We have distance = 800 m

time = 2 minutes 40 seconds = 160 seconds

speed = 800 / 160 = 5 m/s

 

In km/hr

We have distance = 800 m = 0.8 km

time = 2 minutes 40 seconds = 0.044 hr

speed = 0.8/0.044 = 18.18 km/hr