For this case we have that by definition, the distance between two points is given by:

We have to:

Substituting:


ANswer:

2 because u divide 8 by 4 and u get the answer 2
- 84.7 + 59.2, this is your expression
There wasn't much to go off of but based of the information you've gave me the answer would be 7.68=6.28
Given
s=16t^2
where
s=distance in feet travelled (downwards) since airborne with zero vertical velocity and zero air-resistance
t=time in seconds after release
Here we're given
s=144 feet
=>
s=144=16t^2
=>
t^2=144/16=9
so
t=3
Ans. after 3 seconds, the object hits the ground 144 ft. below.