Physics, 16.04.2020 17:04 cchotshot

An engine flywheel initially rotates counterclockwise at 6.39 rotations/s. Then, during 21.7 s, its rotation rate changes to 2.93 rotations/s clockwise. Find the flywheel's average angular acceleration (including its sign) in radians per second squared. Define counterclockwise rotation as positive.

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An engine flywheel initially rotates counterclockwise at 6.39 rotations/s. Then, during 21.7 s, its...