33From biological point of view also human can only sense acceleration not constant velocity. Human has got an inbuilt accelerometer but no sppedometer.......
I am in a car moving with constant velocity, such that i cannot see what is going on outside.
I dont know whether the car is at rest or in motion. How will I find it out? (Without using any external help! ) like a speedomenter, viewing outside the window etc. I am allowed to keep some instruments in the car.
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2 Answers
62There is no way.
If you look carefully, earth is also moving. But sitting on earth, it is almost impossible to know that we are on earth. I say almost because the earth is not moving in a straight line without acceleration. Earth has its own acceleration. This is because it is moving in a circular motion around sun.
If there are no bumps on the road, it will be impossible to say that the car is moving or not!
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