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Q: If the distance travelled by an object is zero, what will be the displacement of the object?
  • A. negative
  • B. zero
  • C. positive
  • D. may or may not be zero
Correct Answer: Option B - Distance can include linear or non-linear measures between two points; but displacement includes only a linear measure between two points. For example If a person runs 100 m, in straight line then both the distance and displacement are 100 m. If a person runs around a circular track once (400 m ) assuming that in the one round the distance covered is 400 m but the displacement is 0 m. Hence, if the distance travelled by an object is zero, then the displacement of the object is also zero.
B. Distance can include linear or non-linear measures between two points; but displacement includes only a linear measure between two points. For example If a person runs 100 m, in straight line then both the distance and displacement are 100 m. If a person runs around a circular track once (400 m ) assuming that in the one round the distance covered is 400 m but the displacement is 0 m. Hence, if the distance travelled by an object is zero, then the displacement of the object is also zero.

Explanations:

Distance can include linear or non-linear measures between two points; but displacement includes only a linear measure between two points. For example If a person runs 100 m, in straight line then both the distance and displacement are 100 m. If a person runs around a circular track once (400 m ) assuming that in the one round the distance covered is 400 m but the displacement is 0 m. Hence, if the distance travelled by an object is zero, then the displacement of the object is also zero.