DISPLACEMENT AND VELOCITY

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DISPLACEMENT AND VELOCITY

• The length of a strait line drawn from an
  objects starting point to its end point

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Displacement

• ?XXf-Xi where delta X is the total displacement
  and Xf final position Xi initial position
• Is not always to the distance traveled
• Can be positive or negative

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VELOCITY

• The displacement divided by the time interval
  (time interval is always positive) ?t tf-ti
  where delta t is the time interval and tf final
  time ti initial time.
• SI unit is meters per second (m/s)
• Not the same as speed speed has no direction
  whereas velocity has both speed and direction.

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TERMS

• Scalar a value without a direction
• Vector a value with a direction
• Average velocity (v with a bar over it) the
  total displacement divided by the time interval
  during the displacement
• Instantaneous Velocity the velocity of and
  object at a specific time along its path

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Terms cont

• Instantaneous velocity is the slope of a line
  tangent to the point on the velocity curve.