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The angular speed of the wheel of a vehicle is increased from \( 360 \mathrm{rpm} \) to \( 1200 \mathrm{rpm} \) in 14 seconds.
\( \mathrm{P} \) Its angular acceleration is:

W
(1) \( 2 \pi \mathrm{rad} / \mathrm{s}^{2} \)
(2) \( 28 \pi \mathrm{rad} / \mathrm{s}^{2} \)
(3) \( 120 \pi \mathrm{rad} / \mathrm{s}^{2} \)
(4) \( 1 \mathrm{rad} / \mathrm{s}^{2} \)
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