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The drive propeller of a ship starts from rest and accelerates at 2.1 x 10-3 rad/s2...

The drive propeller of a ship starts from rest and accelerates at 2.1 x 10-3 rad/s2 for 2.1 x 103 s. For the next 2 x 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2 x 10-3 rad/s2 until it slows (without reversing direction) to an angular speed of 7 rad/s. Find the total angular displacement of the propeller.

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