motion

• Process of terminal velocity on a falling object

  • Skydiver leaves plane and will accelerate until the air resistance equals the weight
  • He will then reach terminal velocity
  • He open the parachute, it increases air resistance so it is bigger than wieght
  • Slows diver down until his speed has dropped enough for it to equal his weight. This is the new terminal velocity
• stopping distance is the total distance you need to stop after you see a problem
• thinking distance is the distance the vehicles travels during the driver's reaction time
• the braking distance is the distance the vehicle travels after the brakes are applied until it comes to a complete stop
• stopping distance = thinking distance + braking distance
• thinking distance = speed x reaction time
• Newton's First Law

  An object will remain at rest or continue to travel with constant velocity unless acted upon by a resultant force
• Newton's Second Law

  The rate of change of momentum of an object is directly proportional to the net force which acts on the object
• Newton's third law

  when two objects interact, they exert equal and opposite forces on each other.

  The forces must be of the same type and same magnitude
• Archimedes Principle

  When a body is completely or partially submerged in a fluid, it experiences an upthrust equal to the weight of the fluid it has displaced