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aleksandr82 [10.1K]
2 years ago
6

Which of the following describes a velocity vs. time graph that looks like this?

Physics
1 answer:
goblinko [34]2 years ago
7 0

Explanation:

<h2>the velocity has decreasing velocity. this is my answer</h2>
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The magnetic field lines of a bar magnet spread out from the north end to the south end. South end to the north end. Edges to th
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<h3><u>Answer;</u></h3>

the north end to the south end.

<h3><u>Explanation;</u></h3>
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To solve the problem it is necessary to apply conservation of the moment and conservation of energy.

By conservation of the moment we know that

MV=mv

Where

M=Heavier mass

V = Velocity of heavier mass

m = lighter mass

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That equation in function of the velocity of heavier mass is

V = \frac{mv}{M}

Also we have that m/M = 1/7 times

On the other hand we have from law of conservation of energy that

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Where,

W_f = Work made by friction

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Applying this equation in heavier object.

F_f*S = \frac{1}{2}MV^2

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Here we can apply the law of conservation of energy for light mass, then

\mu mgs = \frac{1}{2} mv^2

Replacing the value of \mu

\frac{1}{g(98)(5.1)}v^2  mgs = \frac{1}{2}mv^2

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s = 249.9m

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