Vector and Scalar- Basic Concepts

One important thing to understand is that DIRECTION MATTERS in Physics

Vector And Scalar

  • Vector is a quantity that contains both magnitude and direction
  • Scalar is a quantity that contains magnitude only
  • Magnitude describes the seize of a quantity 

Displacement

  • A vector quantity
  • Describes an object's change in position.
  • It is equal to final position minus initial position

Distance

  • A scalar quantity
  • Distance refers to the total movement of an object without any regard to direction

Speed

  • A scalar quantity
  • Average speed is equal to total distance divided by time

Velocity

  • A vector quantity
  • Change in velocity is equal to the difference between an object's final velocity and initial velocity
  • Average velocity is equal to displacement divided by time

Instantaneous velocity

Instantaneous speed

Instantaneous acceleration

Source of the image: http://thescienceclassroom.org/physics/motion-in-1-d/distance-and-displacement/

Vector Addition and Subtraction

 Vector and Scalar Quiz


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