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प्रश्न
Distinguish between average speed and average velocity.
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उत्तर
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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संबंधित प्रश्न
By giving an example, prove that rest and motion are relative terms.
Define Scalar quantities.
Define Vector quantities.
State whether the following is scalar or vector quantity
Acceleration
Copy the following table and fill in the blank spaces.
| Quantity | S.I. Unit | Scalar or Vector |
| ___________ | kg m−3 | ___________ |
What do you mean by motion?
Give two examples of scalars.
You are at rest as well as in motion. Justify the statement giving your point of view.
Name the physical quantity representing the magnitude and its direction.
Write two examples of vectors.
