Velocity, Momentum and acceleration

• Velocity is the rate of change in displacement, measured in m/s.
• Velocity (m/s) = Displacement (m) / Time taken (s)
• Displacement is the shortest straight line route between start and finish
• Acceleration is the rate of change of velocity.
• Acceleration (m/s) = final velocity (m/s) - initial velocity / time taken (s)
• Momentum is the quantity of motion possessed by a moving body
• Momentum (kgm/s) = mass (kg) x velocity (m/s)
• Ways to increase acceleration

  • Increase force /velocity
  • Increase friction
  • Reduce mass/weight
  • Decrease air resistance