What is momentum

• What is momentum defined as?

  Momentum is the product of mass and velocity.
• How does momentum help explain interactions in nature?

  It describes the motion of objects and their interactions.
• What is the formula for calculating momentum?

  • Momentum (p) = mass (m) × velocity (v)
  • Units:
  • p: kg m/s
  • m: kg
  • v: m/s
• If a lorry has a mass of 7,500 kg and travels at a speed of 25 m/s, what is its momentum?

  The momentum is $187,500~kg~m/s~(south)$.
• What is the momentum of an ice skater with a mass of 60 kg traveling at 15 m/s?

  The momentum is $900~kg~m/s$.
• What are the characteristics of a vector quantity?

  • Has both magnitude (size) and direction
  • Examples include velocity and momentum
• What is mass measured in?

  Mass is measured in kilograms (kg) or grams (g).
• What is velocity defined as?

  Velocity is the speed of an object in a particular direction.
• Why does an elephant have no momentum when standing still?

  Because it has no velocity when it is not moving.
• How does the momentum of an object change as its speed increases?

  The momentum increases as the speed of the object increases.
• What is the relationship between mass, velocity, and momentum?

  • Momentum increases with greater mass or velocity
  • Momentum is directly proportional to both mass and velocity