Question

If the object dropped vertically from the
top of the builing takes 2 seconds to reach
the ground then the height of the
bull ding is (g = 10 ms-2)
a) 10m)
b) 16m c)20m d) 25m .​

Answer 1

Answer:

c) 20 m

Explanation:

Given data,

t = 2 sec

u = 0 m/s

g = 10 m/s

h = ?

By using the 2nd equation of motion,

h = ut + 1/2 gt^2

h = 0 x 2 + 1/2 x 10 x 2 x 2

h = 1 x 5 x 2 x 2

h = 20 m

Hope it helps u...