momentum & impulse

• Momentum is affected by

  • mass
  • velocity
• The object with greater mass and the object with high velocity have more momentum thus it's harder to stop
• Momentum is a product of mass and velocity
• The SI unit of momentum is kilogram meters per second or kg.m/s
• It refers to the quantity of the motion that an object has.

  Momentum (mass in motion)
• Impulse

  The change of momentum
• When the object slows down or moves faster

  1. Velocity decreases or increases

  2. Change in velocity or mass

  3. Change in momentum
• Impulse

  • The greater time of impact the lesser the force
  • The lesser the time of the impact the greater the force of impact
• Force of impact

  • Directly proportional to the momentum of the body
  • Inversely proportional to the time of contact
• Force is needed to change the momentum of the body
• The force of impact of the moving object is affected by force and time
• Applying same force for a longer time


  Immense change of momentum happens
• A longer sustained force

  Produces large change in momentum or impulse
• Momentum of an object

  Changes if its velocity or mass also changes
• The object that is not moving has zero momentum
• The total momentum of a system does not change if no net external forces are acting on it
• The momentum of an object or set of objects (system) remains the same if its left alone.
• If the “m” value and the “v” value remain the same, the momentum value will be constant.