Question

A stone is thrown vertically upward from the top of tower takes 5 s to reach the ground. If'g'is 9.8m * s ^ - 2 , the height of tower is a) 24.8 m b) 25.6 m c) 24.5 m d) 24.2 m​

Answer 1

Answer:

24.5m

Explanation:

Given,

time(t) = 5s

gravity(g) = 9.8m/s^2

To Find :-

Height of the Tower(h)

Formula Used :-

h = ut + 1/2gt^2

Solution :-

According to Given Conditions,

u = 0m/s

h = 0(5) + 1/2(9.8m/s^2)(5)s^2

= 0 + 4.9(5)m

= 4.9(5)m

= 24.5m

Hence, h = 24.5m

So, it is option 'c'