GCSE Physics (AQA)

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Momentum

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Forces Momentum

Momentum

3:36 Conservation of Momentum
Spec 4.5.7.1
Previous Road Conditions Next Conservation of Momentum
  • Momentum of a moving object is defined as the product of its mass and velocity.
  • Momentum is a fundamental concept in physics, especially at higher levels.
  • The key equation for momentum at the GCSE level is momentum (P) equals mass (M) multiplied by velocity (V), expressed as P = M x V.
  • This equation is not included on the formula sheet, but related equations involving the MV term are present.
  • Momentum is a measure of how heavy and fast an object is moving.
  • Units of momentum are kilograms meters per second (kg m/s), without a specific name for the combined unit.
  • Example provided: Calculating the momentum of a 45 gram golf ball moving at 40 meters per second as it hits a car window, requiring conversion of mass from grams to kilograms.
  • The momentum calculation involves substituting the values into the formula, resulting in 1.8 kg m/s for the golf ball.
  • Momentum comparison: Faster and more massive objects have greater momentum than slower and less massive objects.
  • Increasing either mass or velocity will result in an increase in momentum.

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