Further Motion Concepts

• What does momentum indicate about moving objects?

  They are likely to continue in their direction
• What factors does momentum depend on?

  Velocity and mass
• What is the formula for momentum?

  p = mv
• What do the symbols in the momentum formula represent?

  p is momentum, m is mass, v is velocity
• What does Newton's second law relate to?

  Resultant forces and acceleration
• How is force related to momentum in Newton's second law?

  Force is related to change in momentum over time
• What is the formula for force in terms of momentum?

  F = ∆p / t
• What is the equation for conservation of momentum?

  momentum before = momentum after
• What does Newton's third law state?

  Every action has an equal and opposite reaction
• What is conserved in an elastic collision?

  Kinetic energy is conserved
• What characterizes inelastic collisions?

  Some energy is converted to other forms
• What is the formula for calculating moments?

  M = Fd
• Why is it easier to open a door at the handle?

  Greater distance from pivot requires less force
• How do multiple moments interact at a pivot?

  • Total moment is the sum of separate moments
  • Moments are vectors; direction matters
• How can an object be balanced around a pivot?

  Equal moments in opposite senses of rotation