Question

1) 50 m
2) 75 m
A stone is dropped from a certain height which can reach the ground in 5 seco
If the stone is stopped after 3 s of its fall and then allowed to fall again, then
the time taken by the stone to reach the ground for the remaining distance is
(g = 10 m/s2)
1) 2 sec
2) 3 sec
3) 4 sec
4) 8 sec​

Answer 1

Answer:

2:4 is answered for your question

Answer 2

Answer:

option (3) 4 sec is correct answer

Explanation:

total height (h) = (1/2)gt²

= 10×5×5/2 = 125 m

height covered in 3s = (1/2)×10×3×3 = 45 m

remaining height = 125-45 =80 m

let time taken to reach the remaining height be t

=> t =√(2×80/10)

= √ 16

= 4 seconds

formula:- t = √(2h/g)

hope this helps you