Question

An object falls from an airplane

that is flying at an altitude of
6400 ft. How many seconds later
will the object hit the ground? Use
the equation 16t2 = d, where d is
the distance in feet and f is the
time in seconds.

Answer 1

t = 20 seconds

Explanation:

The force of gravity upon an object results in that object accelerating at 16ft/s². By substituting 6400ft in the equation 16t² = d you get:

16t² = 6400

Next, isolate t by dividing both sides by 16

t² = 400

Now, solve for t by taking the square root of both sides

`√(t^2) = √(400)`

t = 20