momentum

• What is momentum?

  A property of all moving objects
• How is momentum calculated?

  Mass x velocity
• What type of quantity is momentum?

  A vector quantity
• If the forward direction is to the right, what is the momentum of the dinosaur?

  Positive momentum
• If the dinosaur has positive momentum, what is the momentum of the car?

  Negative momentum
• What does the conservation of momentum principle state?


  In a closed system, the total momentum before collisions= total momentum after collisions
• How do you find total momentum before a collision?

  Add the momentums of both objects
• What happens to momentum when stationary objects are involved?

  Total momentum remains zero
• What is the initial momentum of a stationary gun?

  Zero momentum
• What happens to the gun's momentum when it fires a bullet?

  Gun recoils with equal momentum
• What does a negative recoil velocity indicate?

  Movement in the opposite direction
• What is the symbol for momentum?

  p
• How can the momentum equation be expressed using the symbol?

  p = mv
• What are the key concepts of momentum discussed in the video?

  • Momentum is mass times velocity
  • Momentum is a vector quantity
  • Conservation of momentum principle
  • Total momentum before equals total after
  • Momentum can be zero for stationary objects
• What does a positive number for momentum mean?

  Object is moving to the right
• What does a negative number for momentum mean?

  Object is moving to the left?
• What is the unit for momentum?

  Kg m/s