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  4. 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

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Q. 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

Motion in a Straight Line

Solution:

Displacement = diameter = 2 $\times$ radius = 2 $\times$ 700 = 1400 m
Distance moved in this case is given by $\frac{1}{2}(2 \pi r) = \pi r$

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