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Question

If a cyclist takes one minute to complete half revolution on a circular path $$120 m$$ radius. What is the average velocity?


A
1m/s
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B
2m/s
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C
3m/s
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D
4m/s
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Solution

The correct option is D $$4 m/s$$
After half revolution, the cyclist will be on the opposite side of the diameter from the point where he started
So his displacement = diameter = $$2\times 120m=240m$$
time taken is $$1min=60s$$ so average velocity $$v=\dfrac{240m}{60}=4m/s$$

So, the correct answer is '4m/s'.

Physics

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