Question

A body dropped from the top of a tower covers a distance 7x in the last seconds of its journey, where x is the distance covered in the first second how much time does it take to reach the ground.

(a) 3s.

(b) 4s.

(c) 5s.

(d) 6s.

Answer 1

Answer is (b) 4s

x_n = (g/2) (2n - 1) and x₁ = g/2 (2 - 1) = g/2.