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## Main Question or Discussion Point

So Ive done a practical investigation.

Pretty much I used a elastic band to launch a puck on a horizontal floor. I have measured the extension and force for the elastic band, and the extension and stopping distance for the puck on two different surfaces.

How do I calculate the coefficient of friction?

thanks.

Pretty much I used a elastic band to launch a puck on a horizontal floor. I have measured the extension and force for the elastic band, and the extension and stopping distance for the puck on two different surfaces.

How do I calculate the coefficient of friction?

thanks.