Question

The speed of the train is 72 km per hour. Find its speed in metre per second​

Answer 1

Answer:

$72 \times \frac{1000}{3600} \\ = 72 \times \frac{5}{18} \\ = 20m {sec}^{ - 1}$

which is the required ans

Answer 2

Answer:

72000m

1 km =1000m

72km=72000m