Motion in One Dimension — PHYSICS STD 9 — Question
ICSE BoardEnglish MediumSTD 9PHYSICSMotion in One Dimension2 Marks
Question
Distinguish between average speed and average velocity.
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Answer
Average speed is the ratio of the total distance travelled by the body to the total time of journey, it is never zero. If the velocity of a body moving in a particular direction changes with time, then the ratio of displacement to the time taken in entire journey is called its average velocity. Average velocity of a body can be zero even if its average speed is not zero.
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