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Question: 4 kg i ms post disk top view a 4kilogram...

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4 kg I m/s Post Disk Top View A 4-kilogram disk slides over level iontoward the east at a velocity of 1 meter per second, as shown above. The disk strikes a post & rebounds toward the north at the same speed. The change in the magnitude of the eastward component of the momentum of the disk is (A) 4kg-m/s (B) -lkg-m s (C) Okg-m/s (D) 1kg m s (E) 4kg m/s
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