Laws of Motion

• Speed


  • is how fast an object is moving
  • The work out the speed of an object you need to know how far an object has traveled, and how long it has taken to travel the distance
• Newton’s laws of motion

  • a set of fundamental laws that describe the relationship between an objects motion, and the forces acting upon it
• Newton’s first law

  • the law of inertia
  • States that an object at rest will remain at rest and object in motion will continue in motion. Unless acted upon by an unbalanced force.
• Types of friction

  • sliding friction
  • Rolling friction
  • fluid friction (air/liquid)
  • Static fiction
• Newton’s second law

  • the law of acceleration
  • States that an acceleration of an object is directly proportional to the net force acting on the object
  • and inversely proportional to its mass
• Newton’s third law

  • States that for every action there is an equal and opposite reaction