Physics

• Inelastic Collision

  Kinetic energy is not conserved
• Elastic collisions

  Kinetic energy is conserved
• Couple

  A pair of coplanar forces equal in magnitude but act in opposite directions
• Current

  Rate of flow of charge
• Potential Difference

  Work done (Energy transferred) per unit time
• Accleration


  Rate of change of velocity
• Angular Displacement


  The change in angle, in radians, of a body as it rotates around a circle.