2 years ago

In an elastic collision, the momentum is _, and the mechanical energy is _.

Physics

1 answer:

olga nikolaevna [1]2 years ago

6 0

The answer to your question is b

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A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 34.5 kg.

ozzi

Answer:

$I_1 = 32.5 kg m^2$

Explanation:

Here as we know that total angular momentum is always conserved for child + round system

so here by angular momentum conservation we have

$I_1 \omega_1 = (I_1 + I_2)\omega_2$

here we have

$I_2 = mR^2$ (inertia of boy)

$I_2 = (34.5)(1.45^2)$

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now we have

$I_1(2\pi 55) = (I_1 + 72.5)(2 \pi 17)$

$I_1 = (I_1 + 72.5)(0.31)$

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Answer:

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A motorcycle traveling at 25 m/s accelerates at a rate of 6 m/s2 for 4 seconds. What is the final speed of the motorcycle in m/s

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Final velocity = V = x

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Appy the equation:

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1 year ago

In an elastic collision, the momentum is _____, and the mechanical energy is _____.

In an elastic collision, the momentum is _, and the mechanical energy is _.