Motion in One Dimension — PHYSICS STD 9 — Question
ICSE BoardEnglish MediumSTD 9PHYSICSMotion in One Dimension2 Marks
Question
Distinguish between speed and velocity.
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Answer
Speed is a scalar quantity, while velocity is a vector quantity. The speed is always positive-it is the magnitude of velocity, but the velocity is given a positive or negative sign depending upon its direction of motion. The average velocity can be zero but the average speed is never zero.
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