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  4. The numerical ratio of displacement to the distance covered is always:

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Q. The numerical ratio of displacement to the distance covered is always:

BHUBHU 2004

Solution:

Displacement is defined as the change in position of body from $ A\left( x=0 \right) $ to $ C=\left( x=5 \right) $ , while distance is the total path length $ \left( ABC \right) $ travelled by the body.
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Displacement is vector quantity having both magnitude and direction, while distance is a scalar quantity. Also displacement is always less than distance, hence numerical ratio of displacement and distance travelled must be either one or less than one.