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What is motion?

  1. The change of position with reference to time
  2. The change of motion with respect to air
  3. A bus at rest with respect to time
  4. None of the above

Answer: The change of position with reference to time

Long Answer:

Motion can be defined as the change of position of an object with reference to time. If an object is not changing its position with reference to time, it is said to be in state of rest.

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