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Colt1911 [192]
3 years ago
6

I need help in math thank you

Mathematics
1 answer:
yan [13]3 years ago
6 0

The correct answer is 960 yards

Explanation:

The first step to answer this question is to calculate the distance Alan traveled. Additionally, to calculate this use the time (90 seconds) and the speed (32 ft/s) by considering distance equals speed multiplied by time.

D (Distance) = s (speed) x t (time)

D = 32 ft/s x 90 s

D= 2880 ft

This means the total distance was 2880 feet; however, the answers are provided in yards and the feet need to be changed to yards. Follow this process:

1 foot = 0.3333 yards

2880 ft x 0.3333 yards = 959.99 yards which can be rounded as 960 yards.

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Step-by-step explanation:

Step 1 :

Given,

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We need to find  new kinetic energy when the angular velocity is doubled.

Step 2 :

We have

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Given that the angular velocity is doubled  singular velocity is also doubled. since the radius of the fan is the same in both cases we have

the new velocity = 2rω = 2v

So the KE = \frac{1}{2} m(new velocity)² = \frac{1}{2} m(2v)² = 4 (\frac{1}{2} mv²) = 4 (2000) = 8000 J

Step 3 :

Answer :

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