Hey again, once again I have no idea where to start on an equation that I recieved on a quiz(adsbygoogle = window.adsbygoogle || []).push({});

A 70 kg skater initially moving at 10.0 m/s across the ice drags the rough part of one skate along the ice, slowing herself to 4.0 m/s over a 2.0 s period of time. What is the magnitude (a positive number) of the frictional force on her during the time she is slowing down? [Assume her acceleration is constant.]

I did some models with force diagrams and such on my own, but once again I couldn't really figure out anything from them. If someone could once again point me in the right direction generally on how to go about this I would be extremely greatful. Thank you in advance.

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# Homework Help: Back again, Another question about friction

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