problem related to speed and velocity.

Asked by Mansha | 5th Jun, 2008, 11:18: PM

Expert Answer:

Velocity has two components, speed and direction.  Speed can bemeasured in whatever units you like, say miles per hour.  Direction is definedby the person doing the measurement.  So, if I define one direction to be positive I will have a positive velocity when travelling in thatdirection.  I will have a negative velocity when travelling in the opposite direction

you cannot have a negative speed many physical quantities, BY DEFINITION, cannot be negative some examples: speed, mass, measurements of size, the direction of time

Answered by  | 6th Jun, 2008, 06:51: PM

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