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3 years ago

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3) A person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.01

00 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.

1 answer:

iragen [17]3 years ago

7 0

Answer: 87KN

Explanation: F= m(v-u)/t

V= h/t

V= 60/0.0100

v= 6000m/s

M=145g/1000=0.145kg

F= 0.145*6000/0 .001

F= 87000N

F= 87KN

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Complete Question

The complete question is shown on the first uploaded image

Answer:

a

The Ranking of the curve according to their speed would be equal Rank because $v_1 =v_2 =v_3$

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The first frequency would have a higher rank compared to the other two which will have the same ranking when ranked with respect to their angular velocities because

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Explanation:

Mathematically Frequency can be represented as

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Now looking at the diagram we see that

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Let the wavelength be $\lambda_2 = 2 \lambda$ , and the frequency $F_2 = \frac{F}{2}$

For the third frequency

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To obtain v for each of the frequency we make v the subject in the equation above for each frequency

So,

For the first frequency we have

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For the second frequency

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The Ranking of the curve according to their speed would be equal Rank because $v_1 =v_2 =v_3$

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For the first frequency we have

$w_1 = 2\pi F_1 = 2 \pi F$

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For the third frequency

$w_3 = 2 \pi F_3 = 2 \pi \frac{F}{2} = \pi F$

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The first frequency would have a higher rank compared to the other two which will have the same ranking when ranked with respect to their angular velocities because

$w_1 >w_2 = w_3$

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$v = wr$

=> $r = \frac{v}{w}$

Since the linear velocity is constant we have that

$r \ \alpha \ \frac{1}{w}$

This means that r varies inversely to the angular velocity ,What this means for ranking due to the radius is that the ranking of the second third frequency would be the same but their ranking would be greater than that of the first frequency because

$r_2 =r_3 >r_1$

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