Speed

• speed = distance / time
• meter per second
• instantanteous speed
  • current speed
  • speed in d / t at a specific time
• Average speed
  • average speed over entire distance
  • no speed variations in this
  • whole distance / total time
• Constant speed: Steady speed
• Changing speed: → acceleration
• speed vs velocity
  • speed is just dist and time
  • velocity is speed and direction
  • left at 5m/s, velocity is -5m/s
• Acceleration
  • rate at which velocity changes
  • Can be negative (no decelerate)
  • change in speed / time
  • derivative of speed