12.A wheel rotating about a fixed axis with a constant angular acceleration of 2.0 rad/s2 turns through 2.4 revolutions during a 2.0-s time interval. What is the angular velocity at the end of this time interval?
(A) 9.5 rad/s
(B) 8.5 rad/s
(C) 8.0 rad/s
(D) 10.2 rad/s
(E) 12.3 rad/s
詳解 (共 1 筆)
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