to-find-the-time-when-the-ball-reaches-its-maximum-height-and-the-maximum-height

Question

A ball's height, in units of feet, is given by: h(t)=−16t2+64t+80h(t) = $$-16t^2 + 64t + 80$$, where tt is in units of seconds. Use completing the square to find the time when the ball reaches its maximum height.

Accepted Answer

2 seconds

Answer

1 second

Answer

4 seconds

Answer

3 seconds

A ball's height, in units of feet, is given by: h(t)=−16t2+64t+80h(t) = -16t^2 + 64t + 80, where tt is in units of seconds. Use completing the square to find the time when the ball reaches its maximum height.

A ball's height, in units of feet, is given by: $h (t) = - 16 t^{2} + 64 t + 80$ , where $t$ is in units of seconds. Use completing the square to find the time when the ball reaches its maximum height.