In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?
A
If the car moves on a straight road in same direction
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B
If the car moves in a circular path
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C
The pendulum is moving to and fro
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D
The Earth is revolving around the Sun
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Solution
The correct option is A If the car moves on a straight road in same direction An object moving in a curved or circular path can have less displacement than distance.
However, in a linear motion, the displacement is equal to the distance, i.e., ∣∣∣−−→AB∣∣∣=AB
Hence, the correct answer is option (a).