Impluse and Momentum

• Momentum


  The product of the mass of the object and its velocity
• Momentum unit of measurement

  mass velocity
• Impulse


  The product of force and the time it acts on an object
• If there is a change in the velocity or the mass of an object, there is also a change in momentum. This change in momentum is called IMPULSE.
• Impulse-Momentum Theorem


  The impulse applied to an object is equal to the change in its momentum
• The Impulse-Momentum Theorem is considered an alternative to Newton's 2nd Law of Motion that states the net external force acting on an object is responsible for the acceleration of the object
• For an isolated system, the total momentum before interaction equals the total momentum after interaction
• Collisions occur when two or more bodies come in contact with each other; they exert a force on each other
• Linear momentum is always conserved in collisions
• Momentum before collision = momentum after collision