Tangential and normal components of acceleration

• For a curved path,

  𝑎𝑛 will be zero only if 𝑣 is zero
• Normal acceleration - rate of change of direction of the velocity in a curvilinear path
• Tangential acceleration is the rate of change of magnitude of the

  velocity in a curvilinear path.
• Tangential acceleration has the same inclination as the

  inclination of the velocity at the same instant which is also

  the same with the slope of the path at the same instant.