change in momentum

• Momentum


  The product of an object's mass and its velocity
• Rapid changes in momentum can be extremely dangerous
• Calculating force acting on an object due to change in momentum

  Force = Mass x Change in Velocity / Change in Time
• The equation Force = Mass x Change in Velocity / Change in Time is given in the exam
• Change in momentum


  Mass x Change in Velocity
• Rapid changes in momentum lead to huge forces which can be fatal
• Safety devices that slow down momentum change

  • Airbags
  • Seatbelts
  • Crash mats
  • Bike helmets
  • Cushioned surfaces
• Safety devices that slow down momentum change reduce the forces acting and the risk of serious injury