momentum

• What should you be able to calculate by the end of the video?

  You should be able to calculate momentum.
• What is the momentum of an object that is not moving?

  The momentum is zero.
• What is the equation used to calculate momentum?

  Momentum equals mass multiplied by velocity.
• What is the unit of momentum?

  The unit of momentum is kilogram m/s.
• Why is it important to learn the momentum equation for the exam?

  Because it is not provided in the exam.
• If a car has a mass of 1,000 kg and is not moving, what is its momentum?

  The momentum is zero.
• How do you calculate the momentum of a car with a mass of 1,000 kg moving at 20 m/s?

  The momentum is 20,000 kg m/s.
• What is the principle of conservation of momentum?

  In a closed system, the total momentum before an event equals the total momentum after the event.
• What happens to the momentum of a van and a stationary car during a collision?

  • The van has momentum before the collision.
  • The stationary car has no momentum.
  • After the collision, both move together with lower velocity.
  • Total momentum before equals total momentum after.
• Describe the momentum changes in a cannon and cannonball when fired.

  • Before firing, both have zero momentum.
  • The cannonball moves forward after firing, gaining momentum.
  • The cannon recoils backward, gaining equal but opposite momentum.
  • Total momentum remains zero before and after firing.
• Where can you find more questions on momentum?

  In the vision workbook linked in the video.