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Physics 21 Online
OpenStudy (anonymous):

On an essentially frictionless horizontal ice-skating rink, a skater moving at 2.5 encounters a rough patch that reduces her speed by 40 to a friction force that is 28 of her weight.

OpenStudy (anonymous):

Use the work-energy principle to find the length of the rough patch.

OpenStudy (anonymous):

|dw:1338327226664:dw| Put the value and find the value of L....

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