Kevin has a mass of 87- kg and is skating with in-line skates. he sees his 22-kg younger brother up ahead standing on the sidewalk, with his back tuned. coming up, grabs his just before he brother and rolls off at a speed of 2.4 m/s. ignoring friction, find kevin speed just before he grabbed his brother.
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Kevin has a mass of 87- kg and is skating with in-line skates. he sees his 22-kg younger brother up...
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