Conservation of Momentum Principle

• What is momentum?

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

  Mass multiplied by velocity
• What type of quantity is momentum?

  It is a vector quantity
• If the forward direction is to the right, what is the momentum of the car?

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

  Total momentum before equals total momentum after
• How do you find the total momentum before a collision?

  Add the momentums of both objects
• What does a positive total momentum indicate in this scenario?

  Movement to the right
• How do you calculate the shared velocity after the collision?

  Velocity equals momentum divided by mass
• What happens to momentum when stationary objects are involved?

  Total momentum before is zero
• What is the initial momentum of a gun before it is fired?

  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 (rho)
• How can the momentum equation be expressed?

  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
  • Momentum before equals momentum after
  • Momentum can be zero for stationary objects
• What are the steps to calculate the recoil velocity of a gun after firing?

  1. Calculate bullet's momentum
  2. Set gun's momentum + bullet's momentum = 0
  3. Rearrange to find gun's velocity
• What happens to momentum in a closed system during a collision?

  • Total momentum before collision equals total momentum after
  • Objects can move together post-collision
  • Direction of momentum matters