Explanation:
It is given that, the distance(d) that a dropped object falls in t seconds is given by the following equation as :
............(1)
Where
d is the distance (in feet)
t is time (in seconds)
We need to find the time taken by the object to fall 64 feets. Put the value of d = 64 feet in equation (1) as :


t = 2 seconds
So, the object will take 2 seconds to fall 64 feets. Hence, this is the required solution.