A teacher uses a strong slingshot to release an object from the top of a school high in the air. The function a(t)=-16t^2+128t+5

Question

3 years ago

11

A teacher uses a strong slingshot to release an object from the top of a school high in the air. The function a(t)=-16t^2+128t+5

0 gives the approximate altitude, in feet, of the object t seconds after it is released. How long will it be before the object hits the ground? Round to the nearest second.

Mathematics

1 answer:

inessss [21] · Answer 1 · 2022-01-04T18:42:54+03:00

inessss [21]3 years ago

8 0

Ground: y = 0

- 16t² + 128t + 50 = 0

Apply quadratic equation.

t = 0, 8 (rounded to the nearest second)

8 seconds