Question

A ball is thrown down from the top of a tower with a speed of 2.5 m/s. It hits the ground in 8 seconds. What is the height of the tower ? With what speed will the stone hit the ground ? Take g = 9.8 m/s2. [ Ans. (a) 333.6 m (b) 80.9 m/s ]

Answer 1

Answer:

Correct option is

D

100 m

We know that,

s=+ut+

2

1

at

2

s=+(10)(5)+

2

1

(10)(5)

2

s=+50+

2

1

×10×25

s=50+50m=100m

Explanation:

thanks