An elementary student kicks a ball straight into the air with a velocity of 16 feet/sec. If acceleration due to gravity is −32 ft/sec2, how many seconds after it leaves his foot will it take the ball to reach its highest point? Assume the position at time t = 0 is 0 feet.

1.25
6
0.50
Cannot be determined<- my answer

1 answer

h(t) = 16t - 16t^2

surely you can find the vertex of a parabola.