2.4 Momentum

• The formula for momentum is p = mv
• Momentum is always conserved in a closed system.


  True
• Momentum has both magnitude and direction.

  True
• What is the mathematical expression for momentum?

  $p =$$mv$
• What type of quantity is mass?

  Scalar
• Velocity is the rate of change of displacement with respect to time.
• Unlike force, momentum has both magnitude and direction.
• How is momentum defined in physics?

  Product of mass and velocity
• The formula for momentum combines the mass of an object with its velocity
• In a closed system, mass is conserved
• What does speed describe without considering direction?

  Magnitude of motion
• What is the mathematical expression for the conservation of momentum?

  p_initial = p_final
• The total momentum of colliding objects is conserved before and after the collision.

  True
• What is momentum defined as in physics?

  Product of mass and velocity
• Steps to calculate momentum

  1️⃣ Identify the object's mass

  2️⃣ Identify the object's velocity

  3️⃣ Apply the formula p = mv
• The symbol p in the momentum formula represents momentum.
• Unlike momentum, force has only magnitude.
• Momentum combines mass and velocity to describe an object's quantity of motion.
• What is the difference between mass and weight?

  Weight depends on gravity
• Match the concept with its definition:

  Velocity ↔️ Rate of change of displacement with direction

  Speed ↔️ Rate of movement without direction
• Momentum has both magnitude and direction.


  True
• Match the concept with its property:

  Momentum ↔️ Product of mass and velocity

  Force ↔️ Cause of acceleration

  Acceleration ↔️ Change in velocity over time
• What is mass a measure of?

  Amount of matter
• The formula for velocity is v = Δx / Δt
• The principle of conservation of momentum states that the total momentum of a closed system remains constant
• The mathematical expression for the conservation of momentum is p
• What is the final velocity of the 10 kg object in the example problem?

  1 m/s
• Match the scenario with its explanation:

  Colliding objects ↔️ Total momentum is conserved

  Rocket launch ↔️ Momentum of rocket and exhaust gases is conserved

  Explosions ↔️ Total momentum of fragments equals initial momentum
• The final velocity of the 10 kg object in the example problem is 1 m/s.


  True
• Mass is a vector quantity.

  False
• What is the definition of force in physics?

  Cause of acceleration
• Momentum is a scalar quantity.

  False
• The total mass of a closed system changes over time.

  False
• Velocity is a vector quantity.


  True
• What is the definition of momentum?

  Product of mass and velocity
• The formula for momentum is p = mv
• Why is momentum considered a vector quantity?

  It has magnitude and direction
• What force does weight depend on?

  Gravity
• What are the two variables needed to calculate momentum?

  Mass and velocity
• Match the scenario with its explanation:

  Colliding objects ↔️ Total momentum is conserved before and after

  Rocket launch ↔️ Momentum of rocket and exhaust is conserved