A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is : (g = 10 $m/s^2$)

Question

Dr. Abubacker · Accepted Answer

[Solution] $v^2 = u^2 + 2gh$: $6400 = 400 + 20h$, so h = 300 m. Answer (3).

Q. A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is : (g = 10 $m/s^2$)

Explanation

Reviewed by Dr. Abubacker

Want to attempt the full paper?