A wheel has a constant angular acceleration of 2.1 rad/s². During a certain 4.0 s interval, it turns through an angle of 28 rad. Assuming that the wheel started from rest, how long had it been in motion before the start of the 4.0 s interval?
A wheel has a constant angular acceleration of 2.1 rad/s². During a certain 4.0 s interval, it turns through an angle of 28 rad. Assuming that the wheel started from rest, how long had it been in motion before the start of the 4.0 s interval?
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Transcribed Image Text:A wheel has a constant angular acceleration of 2.1 rad/s². During a certain 4.0 s interval, it turns through an angle of 28 rad. Assuming
that the wheel started from rest, how long had it been in motion before the start of the 4.0 s interval?
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