Question
Define motion. What do you understand by the terms ‘uniform motion’ and ‘non-uniform motion’? Explain with examples.
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Answer
A body is said to be in motion when its position changes continuously with respect to a stationary point taken as the reference point.
- Uniform motion: A body is said to be in uniform motion if it travels equal distances in equal intervals of time in a particular direction, no matter how small these time intervals are.
For example: A car running at a constant speed of 10m/s towards east will cover the equal distance of 10m every second towards east, so its motion will be uniform.
- Non-uniform motion: A body is said to be in non-uniform motion if it travels unequal distances in equal intervals of time.
For example: Motion of a freely falling ball from the roof of a tall building.
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