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Velocity

• differs from speed because it includes direction
• since direction of an object can change even if its speed remains constant, an object can be accelerating when it has a constant speed
• an example of this would be a car, traveling a constant 35 mph rounds a curve

Acceleration

• rate of change of velocity
• can be calculated by the formula
  a = (v_f - v_i )/t

  a = acceleration
  v_f = final velocity
  v_i = initial velocity
  t = time interval

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