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maks197457 [2]
3 years ago
13

Applying the Law of Conservation of Momentum

Physics
1 answer:
IgorC [24]3 years ago
6 0

answer

the final velocity is half of train car B's initial velocity

explanation

the conservation of momentum states that the initial and final total momentum are equal

m1v1 + m2v2 for initial momentum

(m1 + m2)v3 for final momentum because both cars stick together so their masses are combined

m1v1 + m2v2 = (m1 + m2)v3

since the mass of both are the same, m1 = m2

m1v1 + m1v2 = (m1 + m1)v3

m1(v1 + v2) = 2m1v3

divide both sides by m1

v1 + v2 = 2v3

since train car A is initially at rest, v1 = 0

v2 = 2v3

v3 = v2 * 1/2

the final velocity is half of train car B's initial velocity

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A mover loads a 100 kg box into the back of a moving truck by
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Answer:

2.7

Explanation:

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Mechanical advantage of a ramp is simply defined as the ratio of the length of the ramp to the height of the ramp. Mathematically, it is given by:

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With the above formula, we can obtain the mechanical advantage of the ramp as follow:

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Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount
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You plan to take a trip to the moon. Since you do not have a traditional spaceship with rockets, you will need to leave the eart
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Explanation:

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so we will have

\frac{GM_em}{r^2} = \frac{GM_m}{(d-r)^2}

now we have

\frac{d - r}{r} = \sqrt{\frac{M_m}{M_e}}

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so we will have

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-\frac{GM_e}{R_e} - \frac{GM_m}{d - (R_e + R_m)} + \frac{1}{2}v^2 = -\frac{GM_e}{r} - \frac{GM_m}{d - r}

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7 0
3 years ago
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soldi70 [24.7K]

Answer:

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n and R are constant, so:

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Plugging in:

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V₂ = 103 cm³

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