2.6. Momentum

• The momentum equation states that momentum is equal to mass multiplied by velocity.
• In the momentum equation, 'p' represents momentum in kg m/s.
• What is the formula for momentum?

  p = mv
• What is the momentum of a 50 kg person running at 3 m/s?

  150 kg m/s
• What does kg m/s represent in terms of momentum?

  Product of mass and velocity
• Inelastic collisions conserve both momentum and kinetic energy.

  False
• Inelastic collisions convert some kinetic energy into other forms like heat or sound.


  True
• The momentum equation is given by p = mv.
• Momentum is measured in kg m/s.


  True
• The initial momentum of a system is calculated using the equation p = mv.
• Steps to solve momentum conservation problems

  1️⃣ Define the system

  2️⃣ Calculate initial momentum

  3️⃣ Calculate final momentum

  4️⃣ Equate initial and final momenta
• In elastic collisions, both momentum and kinetic energy are conserved.
• The initial momentum of a 3 kg ball moving at -3 m/s is -9 kg m/s.
• The formula for momentum is p = mv


  True
• The momentum equation can be written as p = mv


  True
• Momentum is directly proportional to both mass and velocity.


  True
• The momentum equation is essential for understanding collisions.


  True
• The units of momentum are kg m/s


  True
• What does the conservation of momentum state?

  Total momentum remains constant
• Elastic collisions conserve both momentum and kinetic energy.
• Velocity in the momentum equation is measured in m/s.


  True
• To calculate momentum, the formula p = mv is used.
• Kinetic energy is conserved in inelastic collisions.

  False
• Kinetic energy is converted to other forms like heat or sound
• What is the equation for momentum?

  $p =$$mv$
• What is the initial momentum of a 2 kg ball moving at 5 m/s?

  10 kg m/s
• Match the collision type with its properties:

  Elastic ↔️ Both momentum and kinetic energy are conserved

  Inelastic ↔️ Only momentum is conserved
• Steps to solve momentum conservation problems

  1️⃣ Define the system

  2️⃣ Calculate initial momentum

  3️⃣ Calculate final momentum

  4️⃣ Equate initial and final momenta
• What happens to kinetic energy in a collision when it is not conserved?

  Converted to other forms
• In an elastic collision, both momentum and kinetic energy are conserved.


  True
• In a closed system, the total momentum remains constant if no external forces act on it.


  True
• To solve momentum conservation problems, the first step is to define the system.
• Momentum is the product of an object's mass and velocity.
• To calculate momentum, we use the formula p = mv.
• Momentum is measured in kg m/s
• Momentum is directly proportional to an object's mass and velocity.
• State the principle of conservation of momentum.

  Total initial momentum equals final momentum
• What is momentum defined as?

  Product of mass and velocity
• What are the units of momentum?

  kg m/s
• What is the momentum of a 2 kg ball moving at 5 m/s?

  10 kg m/s