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 with a mass of 1,000 kg moving at 20 m/s?

  20,000 kg m/s
• What does the conservation of momentum state in a closed system?

  Total momentum before equals total after
• What happens to the momentum of a van and a stationary car during a collision?

  • Van has momentum before collision
  • Stationary car has zero momentum
  • After collision, total momentum is conserved
• Describe the momentum scenario of a cannon and cannonball.

  • Both cannon and cannonball have zero momentum before firing
  • Cannonball gains forward momentum after firing
  • Cannon recoils with equal backward momentum
  • Total momentum remains zero after firing
• Where can you find more questions on momentum?

  In the vision workbook