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If the wheel of a cycle, whose radius is \( 0.4 \mathrm{~m} \), completes 1 revolution in \( 1 \mathrm{~s} \), then the acceleration of the cycle is
(A) \( 0.4 \pi \mathrm{m} / \mathrm{s}^{2} \)
(B) \( 0.8 \pi \mathrm{m} / \mathrm{s}^{2} \)
(C) \( 0.4 \pi^{2} \mathrm{~m} / \mathrm{s}^{2} \)
(D) \( 1.6 \pi^{2} \mathrm{~m} / \mathrm{s}^{2} \)
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