Question

Q33/180 A ball when thrown upwards with speed
Vo from roof top of a tower took 8 seconds to
reach ground. Again when the ball was thrown
downwards from same roof top with same speed
Vo, it took 2 seconds to reach the ground. Find
height of tower. (g = 10 m/s)​

Answer 1

Answer:

20

s=ut+at²/2

=0+10×2×2/2

=20