A wheel has a constant angular acceleration of 3.0 rad/s2.

A wheel has a constant angular acceleration of 3.0 rad/s2.

A wheel has a constant angular acceleration of 3.0 rad/s2. During a certain 4.0 s interval, it turns through an angle of 120 rad, assuming that the wheel started from rest, how long has it been in motion at the start of this 4.0 s interval?

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