1. What is meant by the statement 'Rest and motion are relative terms'? Give example to showit.2. Explain whether the walls of a classroom are at rest or in motion.3. Define scalar and vector quantities.111 .
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Explanation:
- An object is said to be in motion if it changes its position with respect time and observer. An object is said to be at rest if it does not changes its position with respect time and observer. MOTION AND REST ARE RELATIVE TERMS. That means it all depends upon the observer who is observing the object.
- The examples of motion include: running, cycling, jumping, swimming, eating, drinking, playing, writing, typing, moving cars, throwing ball. The examples of rest include: sleeping, sitting, standing, staring, lying, a fixed clock, bottle kept on a table, a stopped car
- Wall is in rest.
- Those quantity which have magnitude as well as direction are called vector quantity
- Those which have only magnitudes are called scalar quantity
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