Uniform acceleration: Forces: Physics: GCSE (9:1)

• Uniform acceleration

  A constant rate of acceleration, such as an object in free fall
• v² = u² + 2as

  The equation linking final velocity, initial velocity, acceleration and distance

  
• v

  The symbol for final velocity

  
• u


  The symbol for initial velocity

  
• a


  The symbol for acceleration

  
• s


  The symbol for distance

  
• Metres per second (m/s)


  The SI unit for speed and velocity
• Metres per second squared (m/s²)


  The SI unit for acceleration
• Metres (m)


  The SI unit for distance
• Free fall


  The motion of a falling object when the only force acting on it is gravity

  
• Acceleration due to gravity

  Any object in free fall has an acceleration of about 9.8 metres per second squared (m/s²)
• Terminal velocity


  The constant velocity of a falling object when the resultant force acting on the object is zero and the object no longer accelerates