Question

A body covers a distance of 20 km in 20 minutes . Calculate its speed in km/ hr and m/ s.

Answer 1

Answer:

Explanation:

20 min means 1/3 hr

So speed=20/1/3=60 kmper hr

20 min= 3200sec

So speed=20000/3200=25/4m/s

Answer 2

Answer:

speed = 60km/hr =16.66m/s

Explanation:

distance = 20km

time=20minutes

speed = distance /time

= 20*60/20

= 60 km/hr

speed = distance /time

=20*1000/20*60

=16.66 m/s