Acceleration

• Velocity


  The speed plus the direction the object is going
• Acceleration


  Any process where the velocity changes over a period of time. Its unit is m/s^2
• Acceleration


  v=final velocity, u=initial velocity
• Positive acceleration


  Speeding up
• Negative acceleration


  Slowing down
• Acceleration of 0


  Staying at a constant speed
• Acceleration Due to Gravity


  A falling object accelerates towards Earth because of gravity. It will speed up as it falls
• Human Tolerance to Acceleration

  • Depends on the rate of acceleration/ deceleration, length of time, direction, and part of the body affected
  • Horizontal accelerations are better tolerated than vertical drop accelerations which can be deadly
• Equation for Acceleration: change in Velocity/time taken
• Equation: v - u/t