Unit for Kinetic Energy

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Unit for Kinetic Energy

  • Kinetic energy is measured in the units of joules.

  • One joule is the amount of work done when an applied force of 1 newton moves through a distance of 1 metre in the direction of the force.

  • Kinetic energy is a scalar quantity.

  • Kinetic energy does not have a direction.

  • In S.I. unit, a J can be written in its most basic form as: (kg m^2)/(s^2).

  • This is apparent from the kinetic energy equation: KE = (1/2) m v^2.

Facts about kinetic energy

  • The term “kinetic energy” was first coined by mathematician and physicist Lord Kelvin.

  • If you double the mass of an object, you double the kinetic energy.

  • If you double the speed of an object, the kinetic energy increases by four times.

  • The word “kinetic” comes from the Greek word “kinesis” which means motion.

  • Kinetic energy can be passed from one object to another in the form of a collision.

Kinetic energy Definition

  • Kinetic energy is one of many types of energy that exist. This is energy generated because something is moving — the faster it’s going, the more kinetic energy it has. A person sitting has no kinetic energy, but a person running like a maniac has tremendous kinetic energy: 

  • The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed.

  • The amount of kinetic energy KE of an object in translational motion is equal to one-half the product of its mass m and the square of its velocity v.

  • Kinetic energy is given as follows,

    Kinetic energy = ½(mv^2)