Question

A ball dropped from the roof of a tall building will fall approximately how far in two seconds? (A) 10 m, (B) 20 m, (C) 30 m, (D) 40 m, (E) 50 m.

Answer 1

The ball covered the distance in 2 second is 20 m.

(b) is correct option.

Step-by-step explanation:

Given that,

Time = 2 sec

Using equation of motion

`s = ut+(1)/(2)gt^2`

Where, s = height

u = initial velocity

g = acceleration due to gravity

t = time

Put the value in the equation

`s = 0+(1)/(2)*9.8*2^2`

`s = 19.6\ approx\ 20\ m`

Hence, The ball covered the distance in 2 second is 20 m.