Two people A & B are sitting together in a bus and the bus is moving from one place to another. When do we say A is in a state of motion? When can we say that A is not moving?
Answers
Answer:
While sitting in a moving bus is it motion or rest?
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Context: I have built networks over the years in academia, the hedge fund space, and Silicon Valley and now working on Lunchclub,
Good question.
It all depends on the frame of reference of the observer.
If the observer is in the bus, their frame of reference is the bus. Relative to them, you’re motionless, whether the bus is moving or not.
If the observer is standing by the side of the road and the bus is moving past them, their frame of reference is the road, and you’re in motion relative to them.
If the observer is in another bus, their frame of reference is the other bus - and depending on whether it is moving at the same speed as your bus or not, you might be in motion or relatively stationary.
Einstein had a lot to say about all that, and light. Relativity is fascinating.