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nataliastrong3846
29.07.2019 •
Mathematics
Nasa cameras film a rocket launcher vertically from the launch pad, 3 miles away. when the angle between the camera and the ground is 60 degrees, and is changing at a rate of 1.5 rad/minute. find the rockets velocity at that moment.
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Ответ:
.. h/(3 mi) = tan(θ)
.. h = (3 mi)*tan(θ)
Then the rate of change of height (vertical velocity) is
.. h' = (3 mi)*sec(θ)^2*θ'
.. h' = (3 mi)*4*(1.5 rad/min)
.. h' = 18 mi/min
The rocket's velocity is 18 miles per minute at that moment.
Ответ:
You can fill 11 containers.
Step-by-step explanation:
This problem is asking you to divide 24.75 pounds among 2.25 pound holding containers.
So all you must do is divide 2.25 by 24.75. This leaves us with a quotient of 11.