If a toy rocket is launched vertically upward from ground level with an initial velocity of 128 feet per second, then its height h after t seconds is given by the equations h (t) = - 16t squared + 128t (if air resistance is neglected).

How long is the rocket in the air?

Question

Ralph

22 December, 10:06

+1

Answers (1)

Know the Answer?

Benjamin · Answer 1

8 seconds

Step-by-step explanation:

Just use the quadratic equation, but remember, use only positive answer (s). Time can't be negative.

If a toy rocket is launched vertically upward from ground level with an initial velocity of 128 feet per second, then its height h after t seconds is given by the equations h (t) = - 16t squared + 128t (if air resistance is neglected).How long is the rocket in the air?