The maximum height of the rocket is 320feet
The maximum height is the height a particular rocket can spend in air without going further up.
Given the height of the rocket expressed according to the equation
d=80t−5t^2.
At maximum height;
dd/dt = 0
80 - 10t = 0
10t = 80
t = 8s
The time the rocket spend in air is 8seconds
Determine the maximum height
H = 80(8) - 5(8)^2
H = 640 - 320
H = 320 ft
Hence the maximum height of the rocket is 320feet
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