Projectile Height. A rocket is fired upward from some initial distance above the

Question

Projectile Height. A rocket is fired upward from some initial distance above the ground. Its height in feet, h, above the ground, t seconds after it is fired, is given by

h=-16t^2+64t+720 Find its maximum heigh, when the rocket is fired and when it reaches the ground What is the maximum height(in feet)? 784ft How long does it take for the rocket to reach the maximum height? 2 sec. After it is fired, the rocket reaches the ground in t=____seconds The answer for the last question is 9 seconds, but how can this be when there is no other information given? Projectile Height. A rocket is fired upward from some initial distance above the ground. Its height in feet, h, above the ground, t seconds after it is fired, is given by

h=-16t^2+64t+720 Find its maximum heigh, when the rocket is fired and when it reaches the ground What is the maximum height(in feet)? 784ft How long does it take for the rocket to reach the maximum height? 2 sec. After it is fired, the rocket reaches the ground in t=____seconds The answer for the last question is 9 seconds, but how can this be when there is no other information given?

Explanation / Answer

The way that you would solve for t is by using the quadratic equation to factor the above equation. Then set both factors equal to zero to find the equilibrium points, or the points where the rocket is at 0 feet.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.