Momentum

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

  Momentum
• What is the momentum of an object that is not moving?

  Zero
• What is the equation for calculating momentum?

  Momentum = mass × velocity
• What is the unit of momentum?

  kilogram m/s
• Why is it important to learn the momentum equation?

  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?

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

  1,000 kg × 20 m/s
• What is the momentum of a car moving at 20 m/s with a mass of 1,000 kg?

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

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

  It is conserved
• What happens to the momentum of the cannon and cannonball before firing?

  It is zero
• What occurs to the momentum after the cannon fires?

  It remains zero
• How does the momentum of the cannonball relate to the cannon after firing?

  They are equal and opposite
• What types of questions can you find in the vision workbook related to momentum?

  • Various calculations
  • Conceptual understanding
  • Application of momentum principles