Definition:
If a body changes its position with respect to its surrounding then it is said to be in motion.
Examples:
i) When a wagon makes start from its stoop, then a person standing at the stop notices the motion
of the wagon. Because the wagon is changing its position with respect to it’s surrounding.
ii) Similarly, riding on a bicycle, we have the feeling of motion because we are changing our
Position with respect to the surrounding.
REST:
Definition:
If a body does not change its position with respect to its surrounding then it is said to be in motion.
Examples:
i) When a by standing on the stop, then the position of the bus in not changing with respect to a person sitting there on a bench. The bus is at rest with respect to that person.
ii) A person traveling in a bus is at rest with respect to the seat he is sitting on it. But he is in motion with respect to all the things outside the bus.
NOTE:
It is concluded that the states of rest and motion are relative. There is nothing like absolute motion or absolute rest
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