A Wheel Initially Has an Angular Velocity of 18 Rad/s

question 3

Multiple Choice

A wheel initially has an angular velocity of 18 rad/s.It has a constant angular acceleration of 2.0 rad/s² and is slowing at first.What time elapses before its angular velocity is18 rad/s in the direction opposite to its initial angular velocity?

• A)3.0 s
• B)6.0 s
• C)9.0 s
• D)18 s
• E)36 s

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