Concept 1 of 8
Watch on YouTubeVideoRest and motion
An object is at rest if its position doesn't change with time. In motion if position changes with time.
Motion and rest are relative. Sitting in a moving bus, you're at rest compared to your seat, but in motion compared to the road.
Example
A book on a desk — at rest. A moving car — in motion. The Earth is always in motion (spinning and orbiting Sun).
💡 Tip:Always ask 'relative to WHAT?' when deciding if something is moving.
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5 questions to check what you just read.
0 / 5
- Q1.A book on a shelf is at:
- Q2.A moving bus is in:
- Q3.Motion is relative to:
- Q4.Sitting in a moving car, you are at rest relative to:
- Q5.The Earth is always in: