Why can work be thought of as a transfer of energy?

Answer 1

motion

Answer 2

When the object moves ahead only under effecting of conservative force (such as gravity, elasticity, electric field force), sum of various energies of object (including mechanical energy, elastic potential energy, electirc potential energy)are invariant. During the movement of object, one kind of energy may transfer to another kind of energy, however, the sum of various energies are conversation.

Answer 3

That is because work requires energy. According to the law of conservation of energy, it can't be created or destroyed. When doing work, energy change forms and gets transferred to the object until it is released. For example, when you lift up an object and place it on a higher elevation, you gave transferred energy to it and gave it potential energy. The potential energy is transformed into kinetic energy when the object falls down, and if it hits a surface, the energy will scatter, vibrating the areas around it and producing sound.

Also, work= force X distance. The energy does not go away, but rather get changed into some other form (it usually becomes heat and sound).

Answer 4

Kinetic, potential, gravitational potential.

Kinetic energy is the energy of motion that an object has. Objects moving in straight lines possess translational kinetic energy, which we often abbreviate as Ek.

The translational kinetic energy of an object is given by:

Kinetic energy = (1/2)mv2

Potential Energy

If you lift an object you have to do work on it. This means that energy is transferred to the object. But where is this energy? This energy is stored in the object and is called potential energy. The reason it is called potential energy is because if we let go of the object it would move.

Gravitational Potential Energy

As we have mentioned, when lifting an object it gains gravitational potential energy. One is free to define any level as corresponding to zero gravitational potential energy. Objects above this level then possess positive potential energy, while those below it have negative potential energy. To avoid negative numbers in a problem, always choose the lowest level as the zero potential mark. The change in gravitational potential energy of an object is given by:

GPE = mgh

Answer 5

when an object or living thing does work on another object, Some of its energy is tranferred to that object

Answer 6

MOTION

Work is proportional to a force times a distance.

Answer 7

Yes.

Yes.

Yes.

Yes.

Answer 8

Yes.