Question

body goes from A to B with a velocity of 30 m/s and comes back B to A with a velocity of 20 m/s. The average speed of the body during the whole journey is (a) zero (b) 25 m/s (c) 24 m/s (d) none of these​

Answer 1

Answer:

(B). 25

Explanation:

Here, u = 30m/s

v = 20m/s

avg. velocity = u+v

2

= 30+20

2

= 50 =25

2