Changes

The terms [[speed]] and [[velocity]] are often used interchangeably, which is incorrect.  [[Speed]] is a [[Scalar quantity]] which refers to the magnitude, or size, of the [[velocity]] [[vector quantity|vector]].  [[Velocity]] has a direction, while [[speed]] does not.

The terms [[speed]] and [[velocity]] are often used interchangeably, which is incorrect.  [[Speed]] is a [[Scalar quantity]] which refers to the magnitude, or size, of the [[velocity]] [[vector quantity|vector]].  [[Velocity]] has a direction, while [[speed]] does not.

Given a graph of a [[real numbers|real]] curve, the derivative at a specific point will equal the [[slope]] of the line  

Given a graph of a [[real numbers|real]] curve, the derivative at a specific point will equal the [[slope]] of the line  

  [[tangent]] to that point.  

  [[tangent]] to that point.