Question

A boy covers a distance 20 km in 2hours. Find the average speed in km/h-1,m/min-1,m/s-1. plz full explained​. plz it urgent

Answer 1

Answer:

Average speed = Total distance ÷ total time

= 20 / 2

= 10 km/ hr

1 km = 1000m

then average speed =( 20 ×1000 m) ÷ (2 × 60 min)

= 20000/120

= 167 m/min

now for m/ sec:

average speed = (20×1000) ÷ (2×60×60)

= 20000/ 7200

= 2.7 m / sec