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In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. In older works, power is sometimes called activity. Power is a scalar quantity.
A common physics lab involves quickly climbing a flight of stairs and using mass, height and time information to determine a student's personal power. Despite the diagonal motion along the staircase, it is often assumed that the horizontal motion is constant and all the force from the steps is used to elevate the student upward at a constant speed.
Learn how to measure and calculate power, the rate of energy transfer, in physics. Explore the difference between instantaneous, average and peak power, and how power relates to force and velocity.
En física, la potencia ( ) es la cantidad de trabajo efectuado por unidad de tiempo. 1 En el Sistema Internacional de Unidades, la unidad de potencia es el vatio o watt, igual a un julio o joule por segundo. 2 . Definición. La potencia es la relación con respecto al tiempo a la que se realiza el trabajo; es la derivada temporal del trabajo:
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Learn how to calculate power, the rate at which work is done or energy is transferred, in physics. Watch a video and see how power depends on force, velocity and displacement, and how to distinguish between average and instantaneous power.
Learn what power is, how to measure it, and how it relates to work and energy. Explore the history of power units, from the original horsepower to the watt, and see how power is used in different devices and phenomena.
