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(Solved): A speed skater moving across frictionless ice at 8.2 m/sm/s hits a 5.3 mm -wide patch of rough ice. ...
A speed skater moving across frictionless ice at 8.2 m/sm/s hits a 5.3 mm -wide patch of rough ice. She slows steadily, then continues on at 5.5 m/sm/s .