KINETIC ENERGY

The Kinetic Energy of Objects – Forces and Energy & Kinetic Energy

The Kinetic Energy of Objects – Forces and Energy & Kinetic Energy

Work, force and distance

Physics GCSE science revision- Kinetic energyWhenever a force causes an object to move, work is carried out. For example, lifting up a heavy object is work. Work and energy are both measured in joules (J).

W = F x d

  • W is the work carried out in joules (J)
  • F is the force that’s applied in newtons (N)
  • d is the distance which is moved in the direction of the force in metres (m)

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Power

Physics GCSE science revision- Kinetic energyPower refers to how quickly the work is carried out and how fast the energy is transferred. It’s measured in watts (W).

P = E / t

  • P is the power in watts (W)
  • E is the energy transferred (or work carried out) in joules (J)
  • t is the time taken in seconds (s)

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Kinetic energy

Physics GCSE science revision- Kinetic energyObjects that are moving posses kinetic energy. How much energy they have depends on:

  • – mass
  • – speed

Kinetic energy can be calculated using the following equation:

Ek =