B.1.4 - work and energy

• Laws of motion

  • Objects at rest stay at rest, objects in motion stay in motion unless acted upon
  • Object’s acceleration is directly proportional to force applied, indirectly proportional to mass
  • Every action has an equal and opposite reaction 
• Force - push/pull on an object
• Work - transfer of energy from one object to another
• • Conditions for work to be done
  • Movement
  • Force 
  • Object moves in same direction as force applied
• • Work input - energy transferred
  • area in a force x distance graph
• Work output - energy gained as result of work