A particle moves along a semicircle of radius 10m in 5 seconds. The average velocity of the particle is
A
2πms−1
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B
4πms−1
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C
2ms−1
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D
4ms−1
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Solution
The correct option is D4ms−1 Average velocity of particle = Total displacementTotal time As the particle is moving along a semicircle, so Displacement of particle = Diameter of the circle ⇒ Average velocity of particle = Diameter of circle5=2×105=4m/s