How Does Friction Affect a Hockey Puck's Acceleration and Distance on Ice?

AI Thread Summary
The discussion focuses on calculating the acceleration and stopping distance of a hockey puck with a mass of 350g sliding at 6.0 m/s when encountering a frictional force of 0.42N. The acceleration is determined using the formula a = f/m, resulting in a negative value since the puck is decelerating due to friction. There is some confusion about whether the frictional force should be treated as negative in the calculations, but it is clarified that it opposes the puck's motion. The mass of the puck is relevant for calculating acceleration, as it directly influences the outcome. Ultimately, the calculations aim to understand how friction impacts the puck's motion on ice.
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A Hockey puck of a mass 350g is sliding along the ice at 6.0 m/s[n] when it hits a rough patch of ice that exerts a frictional force of 0.42N

i)Determine the pucks acceleration
ii)determine how far the puck will slide before stopping.

f=ma a=f/m a=.42/.35 this gives me 1.2 or something but it is slowing down therefore it should a negative, should I rewrite the equation giving aa negative value or is there a better equation for the information given.
 
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the 0.42 should have a negative attached to it since it acts opposite the direction of motion
 
is the value still 0.42 though?
 
I thought the mass was irrelevant?
 
well F=ma is relavant to the unit I am working on, however it also incorporates other units so I could be way off but I am just dealing with what I have.
 

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