A Sprinter sprints at 8.0m/s. A cyclist rides at 20km/h. Who is faster? Show your workings clearly.

The sprinter

Step-by-step explanation:

Change cyclist to same units as sprinter (m/s)

20 km = 20x1000 m = 20000 m

1 hour = 60 minutes = 60 x 60 = 3600 sec

So 20 km/hr = 20,000 m / 3600 sec = 5.6 m/s

The sprinter is faster as he travels at 8 m/s.

(Similarly if you change the sprinter's speed into km/hr

you should get 28.8 km/hr)