Lesson 4 science

• Momentum


  A vector quantity
• Impulse


  The net force acting on an object over a period of time
• Increasing momentum


  Increases the change in an object's motion
• Conservation of momentum


  A fundamental law stating that momentum is conserved
• Elastic collisions


  • Objects strike each other but do not deform
  • No loss of kinetic energy
• Inelastic collisions


  • Objects strike each other and stick together
  • Loss of kinetic energy
• Conservation of energy


  The sum of kinetic energy and potential energy is conserved
• Heat


  A form of energy
• Thermodynamic analysis


  • Determines the amount of heat
  • Heat has three basic modes: conduction, convection, radiation
• Conduction


  Transfer of energy from more energetic to less energetic particles due to collisions and diffusion
• Convection


  A mode of heat transfer where the fluid is forced to move