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KonstantinChe [14]
3 years ago
13

The height, h in feet, of a rocket is given by h=-16t^2+64t+190, where t is time in seconds. Find the maximum height of the rock

et and find the time the rocket was in the air.
Mathematics
1 answer:
erica [24]3 years ago
6 0

Step-by-step explanation:

The height, h in feet, of a rocket is given by, where t is time in seconds.

h=-16t^2+64t+190 ...(1)

We need to find the maximum height of the rocket and find the time the rocket was in the air. For maximum height, put \dfrac{dh}{dt}=0

\dfrac{d(-16t^2+64t+190)}{dt}=0\\\\-32t+64=0\\\\t=\dfrac{64}{32}\\\\t=2\ s

So, it will reach its maximum height in 2 seconds.

Now put t = 2 in equation (1) as follows :

h(2)=-16(2)^2+64(2)+190\\\\=254\ \text{feet}

So, the maximum height of the rocket and find the time the rocket was in the air is 254 feet and 2 seconds respectively.

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