Power calculation formula and unit
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Power calculation formula
  Power calculation formula is divided into two kinds: 1. Electric power calculation formula: P=W/t =UI, according to Ohm's law U=IR into P=UI can also be obtained: P=I*IR= (U*U) /R; 2. In dynamics: power calculation formula: P=W/t (average power); P=Fvcosa (instantaneous power).

Unit of power
  P represents power, the unit is "watt", referred to as "watt", the symbol is "W". W represents work, the unit is "joule", referred to as "jiao", the symbol is "J". "t" represents time, the unit is "second", the symbol is "s".

What is power
  Power refers to the amount of work done by an object in unit time, that is, power is a physical quantity that describes how fast or slow work is done. The amount of work is certain, and the shorter the time, the greater the power value. The formula for power is power = work/time. Power is a physical quantity that represents the speed or slowness of work. The work done per unit time is called power and is represented by P. Therefore, power is equal to the scalar product of the force and the velocity of the point of force.

What is the relationship between power and speed
  Relationship between power and speed: When the force is certain, the power is proportional to the speed. Power and force relationship: When the speed is certain, the power is proportional to the force. When the force is moving in the same direction as the object, the power of the force to do work is P=Fv. When it is the average speed, P represents the average power, and when it is the instantaneous speed at a certain time, it represents the instantaneous power.