Finding the coefficient of friction going UP and DOWN an incline

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Suppose I push a cart up a low friction (but not frictionless) incline. Looking at the velocity going up and down, we can find both the angle of the incline AND the coefficient of kinetic friction.
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you are an awesome teacher! i never knew how to collect data from the real world to frame a problem. thank you

xt
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Amazing video, would love to implement this in my classroom one day!

sosoyo
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Yes, this was fun. Does the computer have the ability to measure the angle of the track? Just as a way to see how close the numbers were?

fizixx