An athlete runs four laps of a 400 m track. What is the athletes total displacement?

1600 m

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- 400 m

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0 m

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400 m

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1800 m

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Solution

The correct option is B $0 m$
Displacement is a vector quantity that measures the distance between the starting point and ending point, not taking the actual path traveled into account. At the end of four laps, the athlete will be back at the starting point of the track, so the athlete's total displacement will be zero.

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