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Physics

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1. What do we mean when we say that the motion is relative?

  • Physics -

    If we are riding bicycles beside each other at the same speed, our speed relative to each other is zero.
    However our speed relative to the ground is quite another thing.
    If we are doing all of this on a moving ship, then our velocity relative to ground is our velocity relative to the ship plus the velocity of the ship relative to ground.

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