3 years ago

An object with high momentum ______.

Physics

1 answer:

Pepsi [2]3 years ago

7 0

The answer should be (b)

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Answer:

ωf = 4.53 rad/s

Explanation:

By conservation of the angular momentum:

Ib*ωb = (Ib + Ic)*ωf

Where

Ib is the inertia of the ball

ωb is the initial angular velocity of the ball

Ic is the inertia of the catcher

ωf is the final angular velocity of the system

We need to calculate first Ib, Ic, ωb:

$Ib = mb*(L/2)^2=0.15*(1.2/2)^2=0.054 kg.m^2$

$Ic = mc/12*L^2=2.2/12*1.2^2=0.264 kg.m^2$

ωb = Vb / (L/2) = 16 / (1.2/2) = 26.67 m/s

Now, ωf will be:

$\omega f = \frac{Ib*\omega b}{Ib + Ic} = 4.53rad/s$

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2 years ago

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The radar device determines the vehicle's instantaneous speed.

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I need help please answer fast!!!

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Answer:A

Explanation:i just took the test

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