Question

a boy has covered 40km in 2hrs?calculate it's speed in m/s​

Answer 1

40 km/2hrs = 20km/hr

20km / hr = 20×1000/3600 = 5.55 m/s

Hope it helps you

Answer 2

$\red{speed = \frac{distance}{time} }$

$\pink{speed = \cancel\frac{40}{2} }$

$\red{\therefore\:speed=20km/hr}$