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Work uses the same unit as energy. Ideally, you would use the same units for work, potential energy, kinetic energy, or any other type of energy. In the SI, that is the joule.
There are different types of potential energy; in general, you have to use the definition of work = force x distance. Thus, in the case of gravitational potential energy, the work required to lift something (that is, the potential energy) is weight x height. In the more general case, in which the force is not constant, integrals have to be used.
potential
no In most all cases, yes. You use kinetic energy (energy due to motion) if you move, or if you move something. The most common form of potential energy is gravitational potential energy (basically energy due to height). You use this if you fall down (or fall into your bed) or if you drop something (even if it's dropping your backpack from two inches off the ground). You use gravitational potential energy when you drink from a cup by letting gravity do the work of moving the liquid down. It can also be argued that chemical energy is potential energy, in which case, you use it when you eat and obtain energy from food.
It can be both, potential energy whilst in store, but kinetic energy when put to practical use.
Yes
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Work uses the same unit as energy. Ideally, you would use the same units for work, potential energy, kinetic energy, or any other type of energy. In the SI, that is the joule.
They work similarly because they all need energy and they all use energy.
There are different types of potential energy; in general, you have to use the definition of work = force x distance. Thus, in the case of gravitational potential energy, the work required to lift something (that is, the potential energy) is weight x height. In the more general case, in which the force is not constant, integrals have to be used.
potential
*Energy is the capacity to do work or cause change* Organisms store energy in organic molecules as chemical energy* Free energy is the portion of energy released during chemical reactions that is available to do work* -
for growth, repairing cells, to move, for cellular work