Question

Due to gravity, an object falls 16t2

feet in t seconds
(2 is an exponent)
You drop a rock
from a bridge that is 64 feet above the water. Will the rock hit the water
in 2 seconds?

Answer 1

The answer is yes, it will hit the water in 2 seconds

Explanation:

64 feet = 16t^2

Divide both sides by 16:

4 = t^2

Take the square root of both sides:

sqrt (4) = sqrt (t^2)

Evaluated, it equals:

2=t or 2 seconds