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5.89 kg block oscillates back and forth along a straight line on a frictionless horizontal surface....

5.89 kg block oscillates back and forth along a straight line on a frictionless horizontal surface. Its displacement from the origin is given by x = (20.01 cm) cos((12.74 rad/s)t + 5.89 rad). What is the maximum speed acquired by the block?

(Note: Calculate your answer in SI units and do not write the units or unit vectors in the answer box.)

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