Acceleration, speed + velocity

• Distance

  Refers to how far something/someone has travelled from their start to finish position, regardless of direction
• Displacement

  Measures the overall change in position of a person and is measured in MAGNITUDE and DIRECTION
• Speed

  • Measure of the distance an object travels per unit of time (m/s)
  • How quickly something covers a given distance
• Velocity

  • Speed in a given direction
  • A change in velocity can be representing change in speed, change in direction or both
  • Speed and velocity are equal with travelling in a straight line in the same direction
• Acceleration

  • The rate at which the velocity of a body changes with respect to time 3 types:

  1. Positive acceleration - velocity increasing
  2. Negative acceleration - velocity decreasing
  3. Zero acceleration - no change in velocity
• Angular displacement

  • Represents the difference in angle between the start and end position of a body
• Angular distance

  • The sum of angles as a body moves from its start position to its end position