Question 206329
you are given the expressions you need for a solution (there should be a t with the 80 in the second expression)


a) the difference in heights is the difference (subtraction) in the two expressions
___ D(t) = (- 16t^2 + 96t) - (- 16t^2 + 80t) = 16t


b) using D(t) ___ D(2) = 16(2) = 32


c) the height difference will increase as long as both balls are in freefall
___ this stops when the lower (green) ball hits the ground