Answer:
c. 40200 J
Explanation:
Assume gravitational constant g = 9.8m/s2. The weight of the 2000kg vehicle is
In addition to the friction averaging at 500N, the total force is
F = 20000 + 500 = 20100 N
The work required to generate this force over a distance of 2m would be
F*s = 20500 * 2 = 40200 J
So c.40200 J is the correct answer
Answer:
a water bottle.
Explanation:
a water bottle drains an area of land, just pour a water bottle on a small land on the surface of the earth it'll be called drained.
Power is the ratio between energy and time:
In our problem we have E=76 J and t=3.7 s. Therefore, the power is
Answer:
the total acceleration decreases when a body falls until it reaches the value of zero.
Explanation:
In general, resistive forces always oppose the movement of bodies, when a body falls into the air it is subject to two forces, the gravitational attraction and the resistive force of the air that opposes this movement, this force is proportional to the speed and the size of the body increases its value until it equals the acceleration of gravity and from this moment the body moves with constant speed.
In summary, the total acceleration decreases when a body falls until it reaches the value of zero.
Answer:
<u><em>Energy:</em></u> <em>It is the capacity of work done by the body, </em>
- <em>for example, kinetic energy, potential energy, thermal energy, and so on. The S.I. unit of energy is Joule.</em>
<u>Mechanical Energy: </u><em>Mechanical energy is the energy of the body corresponding to its motion or change in its position. </em>
- <em>For example, potential energy and kinetic energy.</em>
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<u><em>Law of conservation of energy: </em></u><em>According to the law of conservation of energy, the net energy of the system remains conserved.</em>
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- <em>For example, in the case of elastic collision, the net energy of the system is conserved before and after the collision.</em>
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<u><em>Law of conservation of energy for moving object: </em></u><em>The net energy of the moving object remains conserved.</em>
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- <em>For example, the net energy of the ball sliding down the hill without any loss of energy remain conserved.</em>
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