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kozerog [31]
3 years ago
12

PLEASE SOMEONE ANSWER THIS

Physics
2 answers:
Kitty [74]3 years ago
4 0

Answer:

All of the above.

coldgirl [10]3 years ago
3 0

Answer:

All the above

Explanation:

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How is work related to energy?​
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Explanation:

Energy should be transferred to an object in order to move it. ... This amount of energy transferred by the force to move an object is called work or work done. Thus, the relation between Work and Energy is direct. That is, the difference in the Kinetic energy of an object is work done by an object.

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A paper clip moves towards a magnet lying on a table. What forces are present in this situation? How do these forces compare?
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What we see as "moonlight" is really reflected sunlight.<br><br> True or False?
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An example of the energy transformation of mechanical energy to electrical energy is
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2 years ago
A 1000 kg car moving at 108 km/h jams on its brakes and comes to a stop. How much work was done by friction?
Nostrana [21]

Answer:

The work done by friction was -4.5\times10^{5}\ J

Explanation:

Given that,

Mass of car = 1000 kg

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When the car is stop by brakes.

Then, final speed of car will be zero.

We need to calculate the work done by friction

Using formula of work done

W=\Delta KE

W=K.E_{f}-K.E_{i}

W=\dfrac{1}{2}mv_{f}^2-\dfrac{1}{2}mv_{f}^2

Put the value of m and v

W=0-\dfrac{1}{2}\times1000\times(30)^2

W=-450000&#10;\ J

W=-4.5\times10^{5}\ J

Hence, The work done by friction was -4.5\times10^{5}\ J

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3 years ago
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