When an object is dropped vertically from a platform, its height after t
seconds can be estimated with the formula shown.
h=h0−16t2
h
is the height of the object in feet.
h0
is the initial height of the object in feet.
t
is the time in seconds after the drop.
Which equation and solution tells how long it takes the object to reach a height of 84
feet if its initial height is 180
feet?