5.7.1 Momentum

• What does momentum measure?

  Effort to stop an object
• The formula for momentum is p = mv


  True
• In the momentum formula, 'm' represents the mass of the object in kg
• What condition is required for momentum to be conserved in a system?

  No external force
• What does 'p' represent in the momentum formula?

  Momentum
• Momentum is a vector quantity, meaning it has both magnitude and direction
• Momentum calculations require considering direction.


  True
• How is momentum calculated?

  $p =$$mv$
• Momentum is a vector quantity, while kinetic energy is a scalar quantity.
• The unit of momentum is kg m/s.


  True
• What is the equation for momentum?

  $p =$$mv$
• Momentum is a vector quantity.


  True
• Match the key aspect with its description:

  Formula for momentum ↔️ $p =$$mv$

  Quantities used ↔️ Mass and velocity

  Conservation principle ↔️ Total momentum remains constant
• Momentum is a scalar quantity.

  False
• What is the initial momentum of a 2 kg ball moving at 3 m/s?

  $6 kg m / s$
• What is the final velocity of a 1 kg ball after colliding with a 2 kg ball?

  $4 m / s$
• Momentum is a vector quantity, meaning it has both magnitude and direction
• What is the unit of momentum?

  kg m/s
• Momentum is conserved in a closed system.


  True
• Match the feature with the correct physical concept:

  Type ↔️ Vector for momentum ||| Scalar for kinetic energy

  Formula ↔️ $p =$$mv$ for momentum ||| $KE =$$\frac{1}{2}mv^{2}$ for kinetic energy

  Conservation ↔️ Yes for momentum ||| No for kinetic energy
• Momentum is a scalar quantity.

  False
• What is the formula used to calculate momentum?

  $p =$$mv$
• In vector addition, two vectors $\vec{A}$ and $\vec{B}$ combine to form a resultant vector $\vec{C}$ using the formula $\vec{A} +$$\vec{B} =$$\vec{C}$, which is similar to the momentum formula in that it considers direction
• Momentum and kinetic energy are both conserved in a closed system.

  False
• What is the equation for momentum?

  $p =$$mv$
• What does 'v' represent in the momentum formula?

  Velocity
• The symbol $p$ represents momentum, which is measured in
• What does it mean for momentum to be conserved in a closed system?

  It remains constant
• What are the units of momentum?

  kg m/s
• The unit for mass is kg
• Steps to apply momentum in physics problems:

  1️⃣ Identify mass and velocity of each object

  2️⃣ Calculate momentum of each object using $p =$$mv$

  3️⃣ Consider direction of momentum

  4️⃣ Add or subtract momentum vectors

  5️⃣ Use conservation of momentum principle
• After a collision, the final momentum of a 2 kg ball moving at 1 m/s is 2 kg m / s