Question

A stone is dropped from a certain height, distance covered by it in one second is:

(a) 4.9m
(b) 1m
(c) 10m
(d) 9.8m​

Answer 1

d = 4.9 m

Step-by-step explanation:

It is mentioned that a stone is dropped from a certain height. It is required to find the distance covered by it in one second.

The initial speed of the stone is equal to 0 as it was at rest. Let d is the distance covered by the stone.

Using second equation of motion :

`d=ut+(1)/(2)at^2`

Put u = 0 and a = g

`d=(1)/(2)gt^2\\\\d=(1)/(2)* 9.8* 1^2\\\\d=4.9\ m`

So, the distance covered by it in one second is 4.9 m.