9th Class Science Time and Motion Question Bank 9th CBSE Science Motion

  • question_answer
      Distinguish between speed and velocity. [NCERT]

    Answer:

          Difference between speed and velocity:
             Speed             Velocity
    1. It is the distance travelled by a body in unit time. 1. Velocity is the speed of an object moving in definite direction.
    2. It is a scalar quantity. 2. It is vector quantity.
    3. As per definition, it can be changed by the distance travelled by a body in a particular time. 3. It can be change by changing the speed of a body.
    4. It is always positive or zero but can never be negative. 4. It sometimes may be positive zero or negative.


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