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MysteryDove12
28.10.2020 •
Mathematics
A boy is twirling a model airplane on a string 4 feet long. If he twirls the plane at 0.5 revolutions per minute, how far does the plane travel in 4 minutes
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Ответ:
Airplane covers a distance of approximately 50.265 feet in 4 minutes.
Step-by-step explanation:
From Rotation Physics we know that angular speed is the number of revolutions done by a particle at a given time. If the boy is twirling a model airplane at constant speed, then we calculate such variable as follows:
Where:
Now we clear the number of revolutions done by airplane within expression:
If we know that
and
, then we get that number of revolutions is:
The airplane made two revolutions in four minutes.
Now, the distance covered by the airplane (
), measured in feet, is calculated by means of the equation below:
Where:
If we get that
and
, then the distance covered by the airplane in 4 minutes is:
Airplane covers a distance of approximately 50.265 feet in 4 minutes.
Ответ:
and so he fell to the dark