Question

A body is fall from the tower and cover half of its height in 2 sec then total time to cover the toatal height

Answer 1

let height of tower be H

thus height covered in 2 sec = H/2

so H/2 = 1/2 g t²

here g is acceleration due to gravity = 10 m/sec²

and t = 2 sec

thus H = 10*4

H = 40

so to cover 40 m time taken be T

40 = 1/2 g (T)²

T² = 8

thus time taken to cover total height = 2√2 sec