Question

a body covers 50 m of disease with a speed of 30 m/s and next 50 m with a speed of 20 m/s. the average speed of the body in whole journey is

a) 24 m/s
b) 25 m/s
c) 50 m/s
d 48 m/s​

Answer 1

Answer:

My favorite sport is cricket. It’s the world's most popular sport and also this is an international game. I like to play cricket with my friends. Mostly we play cricket whenever we all are free. This is 3 international game in the world.l like it very much.

Answer 2

Answer:

c) 24 m/s

Explanation:

average speed for such case would be

2uv/ u+v

2×30 ×20 / 30+ 20

2×600/ 50

1200/50

120/5

24m/s.