A ball is thrown up with an initial velocity of 32 feet per second. How many seconds will it take for the ball to return to the ground using the formula h=vt-16t^2?

Answer 1

in h = 32t - 16t^2 , you are finding t when h = 0

32t - 16t^2 = 0
16t(2 - t) = 0
t = 0 or t = 2

it will take 2 seconds to return

(the t=0 gives you the initial height of 0)