Momentum

• what is momentum

  property that all moving objects have

  defined as the product of the objects mass and velocity
• momentum equation

  p = mv

  (momentum = mass X velocity)
• momentum

  the greater the mass of the object (or the greater the velocity) - the more momentum the object has

  momentum is a vector quantity - has size and direction
• what is a closed system

  no external forces are acting
• conservation of momentum

  in closed system - total momentum before an event (e.g. collision) is the same as after the event (called conservation of momentum)

  can use this to help calculate things like the velocity or mass of objects in a collision