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• Speed


  The distance an object travels per unit of time
• Speed


  The distance an object travels in a specific amount of time
• Distance


  In meters (m)
• Time


  In seconds (s)
• Speed


  In meters per second (m/s)
• Formulas


  • Distance: ST
  • Speed: D/T
  • Time: D/S
• Distance


  How far an object moves in total
• Displacement


  The distance and direction an object moves from a starting position
• Velocity


  A description of both speed and direction
• Velocity is an example of a vector, a quantity that has both magnitude and direction
• Objects


  • Can speed up
  • Can slow down
  • Can change direction
• Acceleration


  Measures how much an object's speed changes over a certain time
• Types of acceleration


  • Change in speed
  • Change in direction
  • Change in speed and direction
• Positive acceleration


  Object speeds up
• Negative acceleration


  Object slows down
• Zero acceleration


  Constant or no speed
• Energy


  The ability or capacity to do work
• Types of energy


  • Potential energy
  • Kinetic energy
• Gravitational potential energy


  Depends upon an object's height above a reference point
• m


  Mass (kg)
• g


  9.8 m/s^2
• h


  Height (m)
• Gravitational potential energy


  • Higher the object, the more potential energy
  • Greater the mass, the more potential energy
• Elastic potential energy


  An object that is stretched or compressed
• v


  Velocity (m/s)
• Kinetic energy


  • Faster the object moves, the more kinetic energy
  • Greater the mass, the more kinetic energy
• Velocity has more of an effect on kinetic energy because the velocity is squared