Physics: You watch a bird circling overhead. He appears to fly I. A perfect circle with a radius of 20m. You find that it takes the bird 30s to complete one revolution. The bird has a mass of .50 kg. Calculate how fast (v) is the bird flying (linear / tangential speed)

The answer i got on my test is C= C is speeding up and D is moving at a constant velocity...

You watch a bird circling overhead. He appears to

alondra6190

21.01.2022

Tangential speed of the bird is 4.19 m/s

Explanation:

As we know that bird complete one rotation in 30 s

so the Time Period of motion of bird is

T = 30 s

Now we can find the angular speed of the bird as

$\omega = \frac{2\pi}{T}$

$\omega = \frac{2\pi}{30}$

$\omega =0.21 rad/s$

now we know that tangential speed of the bird is given as

$v = R\omega$

v = (20)(0.21)

v = 4.19 m/s

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