Question

A person travel a distance of 72 km in 5hrs. Calculate average speed in m/s.

Answer 1

speed = 72/5 km/h

= 72/5 × 5/18 m/s

= 4 m/s

Answer 2

Distance travelled by the person = 72 km

Time taken by the person = 5 hours

We know,

$\textbf{Distance=Speed*Time}$

$\textbf{Speed=Distance/Time}$

Speed = 72/5

$\boxed{Speed = 14.4 km/h}$

$\boxed{=14.4*3.6\ m/s}$

$\boxed{=4\ m/s}$