mechanics

• Vector is a physical quantity with magnitude and direction


  vector
• scalar


  physical quantity consisting of magnitude
• average speed


  total distance per total time
• instanteous velocity


  rate of change in position
• acceleration


  rate of change of velocity
• one dimensional motion


  motion along a straight line
• newton's first law

  a body will remain in its rest or motion at constant velocity unless a non zero resultant acts on it
• normal force


  force in which the surface exerts on an object in which its i contact with, which is perdendicular to surface
• frictionl force

  a force the opposes motion of an object and which acts parallel to the surface
• static force 


  a force the oppose the tendency of motion of an stationary object relative to the surface
• kinectic force


  force that opposes the motion of moving object relative to surface
• newtons second law

  when a net force act on an object, the object will accelerate on the direction of the force and the acceleration is directly proportional to the force and inversely proportional to mass of object
• resultant vector


  sum of 2 or more vectors
• distance

  total pathlength travelled
• displacement 


  difference in position in space
• a property of an object that causes it to resist any tendency of change in its state of motion


  INERTIA
• each body in the universe attracts every other body with a force that is directly proportional to the product of their masses and inversely proportional to the product of their masses and inversely proportional to the square of the distance between their centres


  NEWTON'S LAWW OF UNIVERSAL GRAVITATION
• newtons third law


  when object A exerts a force on object B, object B simultaneously exerts oppositely directed force of equal magnitude on object A