Question

Two balls are thrown simultaneously, (A) vertically
upwards with a speed of 20 m/s from the ground
and (B) vertically downwards from a height of
40 m with the same speed and along the same
line of motion. At which point will the balls collide?
10 m/s2)
(1) 15 m above from the ground
(2) 15 m below from the top of the tower
(3) 20 m above from the ground
(4) 20 m below from the top of the tower
(take g=10m/s^2) ​

Answer 1

Answer:

the option b is the right answer....