Question

3. A train covers 80 km in 2 h. Find its average
speed in km h- and m s-1​

Answer 1

Answer:

40km/h

4000m/s

speed =distance /time

by calculating 80/2 we get 40 km

40 km *1000=4000m...

Answer 2

Answer -

Given -

• Distance = 80 km
• Time = 2 hr

To Find -

• Speed in km/h and m/s

Solution :-

We know that,

Speed = Distance / Time

Speed = 80 / 2

Speed = 40 km/hr

Speed of train = 40 km / hr

Calculating speed in m/s -

1 km = 5 / 18 m/s

40 km = 40 × 5 / 18 m/s

= 20 × 5 / 9

= 100 / 9

= 11.11 m/s

Speed of train ( in m/s ) = 11.11 m/s