A car moves in a semicircular track of radius 700 m. If it starts from one end of the track and stops at the other end, the displacement of car is:

\( 2200 m \)
\( 700 m \)
\( 1400 m \)
\( 800 m \)

Correct answer: \( 700 m \)

Solution

Displacement depends only on initial and final positions. The car starts and ends at opposite ends of a semicircle, so the straight-line separation is the diameter, which is twice the radius.

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