Question

) A body goes from A to B with a velocity of 40 m/s and comes back from B to A with a velocity of 60 m/s. What is the (i) average velocity during the whole journey? and (ii) average speed during the whole journey?

Answer 1

Answer:

Explanation: 1. Avg velocity is zero as displacement is zero .

2. Avg speed is 48 m/s.

Avg speed = total distance/total time taken.

Total distance is 2d m and total time taken is d/40 + d/60 sec.

Hope it helps.