Explain about speed and velocity of the body

Answers (1)

Speed

  • Rate of change of distance with time.

  • Formula-

           Speed = \frac{Change\, in \, distance}{change \, in\, time}

                   v=\frac{distance }{speed}

 

  • Tips of Speed-

  1. S.I. unit\rightarrow ms^{-1} or meters per second.

  2. Dimensions=LT^{-1}

  3. Speed is a scalar quantity.

 

Velocity

  • Rate of change of displacement with time.

  • Formula-

V=\frac{displacement}{time} 

  • Tips For velocity-

  1. S.I. unit \rightarrow  m/s

  2. Dimensions-LT^{-1}

  3. Velocity is a vector quantity. 

  4. Velocity is also called speed in a definite (particular) direction.

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