Question

A stone released with zero velocity from the top of a
tower reaches the ground in 4 seconds. The height of
the tower is about : (Take g = 10 m/s²)
(A) 80 m
(B) 80 mm
(C) 80 cm
(D)None of these​

Answer 1

Answer:

80m

Explanation:

s=ut+1/2(at^2)

=1/2(at^2)

=80m