$h(x)=-16x^{2}+100x+10$

The quadratic function above models the height above the ground $h$, in feet, of a projectile $x$ seconds after it had been launched vertically. If $y=h(x)$ is graphed in the $xy$-plane, which of the following represents the real-life meaning of the positive $x$-intercept of the graph?

Question

Accepted Answer

The time at which the projectile hits the ground

Answer

The initial height of the projectile

Answer

The maximum height of the projectile

Answer

The time at which the projectile reaches its maximum height