To quantitatively understand the effect of a Force, we need to understand the concept of momentum. The momentum of an object is defined as the product of its mass and velocity, Momentum \(\vec{p} = m \vec{v}\). Because velocity is a vector quantity, momentum is also a vector.
If a lorry of mass \(500 \, \mathrm{kg}\) is travelling at \(8 \, \mathrm{m/s}\), what is the magnitude of its momentum in SI units?
  • \(\frac{500}{8}\)
  • \(500 + 8\)
  • \(500 \times 8\)
  • \(500 - 8\)