Question

34. CONSTRUCTION A construction worker is working on the roof of a

building. A drop of paint falls from a rafter that is 225 feet above the
ground. After how many seconds does the paint hit the ground?

Answer 1

t = 6.77 s

Explanation:

Given that,

A drop of paint falls from a rafter that is 225 feet above the ground.

We need to find the time when the paint hit the ground. Let the time be t.

Using the second equation of kinematics i.e.

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

Where

u = 0 (initial velocity is 0 as it was at rest)

a = g

So,

`225=(1)/(2)* 9.8t^2\\\\t=\sqrt{(2* 225)/(9.8)} \\\\t=6.77\ s`

So, it will hit the ground at 6.77 s.