Question

A body falls from a height of 45 m from the ground. Find the time taken by the body to reach to

the ground. (Take g=
10 m s^-2 )
​

Answer 1

9 second is right answer

Answer 2

Answer:

answer is 3

Explanation:

by the equation a=10

s=ut+1/2at2

45=1/2*10*t2. u=0

45=5t2

3=t2