Question

If you drop a rock from a height of 18 m , it accelerates at g and strikes the ground 1.91663 s later. If you drop the same rock from half that height, what will be its acceleration? The acceleration of gravity is 9.8 m/s 2 .

Answer 1

`g\ m/s^2`

Step-by-step explanation:

Given that

height = 18 m

Acceleration = g
`m/s^2`

Time to strike the ground = 1.91663 s

We know that acceleration due to gravity is constant an does not depends on the height of the rock.

So if the height of the rock will reduce to half but still the acceleration due to gravity will remain constant.So the acceleration will be g .