Question

82. A stone released with zero velocity from the top of a
tower reaches the ground in 4 second, the height of the
tower is about:
(a) 20 m (6) 40 m (c) 80 m (d) 160 m.
​

Answer 1

Answer:

a 20m

Explanation:

because stone is realse the zero vecity 20m

follow me

Answer 2

Answer:

c) 80m

Explanation:

Given, u = 0 t = 4s Let g = 10m/s

h = ut + 1/2gt^2

h = 1/2*10*4*4

h = 5*16

h = 80m