Asked by Melissa
the height of a rocket above the ground is modelled by the quadratic function h(t)=-4t^2+32t
a) how long will the rocket be in the air ? how do you know?
b) what is the maximum height that the rocket will reach ?
a) how long will the rocket be in the air ? how do you know?
b) what is the maximum height that the rocket will reach ?
Answers
Answered by
Steve
h(x) = 4t(8-t)
Since it leaves the earth at t=0 and comes back at t=8, I'd say 8 units (presumably seconds).
It reaches max height at (0+8)/2 = 4.
h(4) = 16(4) = 64
Since it leaves the earth at t=0 and comes back at t=8, I'd say 8 units (presumably seconds).
It reaches max height at (0+8)/2 = 4.
h(4) = 16(4) = 64
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