A projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t^2 640t. after how many seconds does the projectile take to reach its maximum height?
- A projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = - 16t² + 640t. After how many seconds does the projectiletake to reach its maximum height? I made the function .
