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_{k}= 0.35, find the speed of the clay before impact.

I don't know where to start in this problem. I know that the equation for kinetic friction is

f

_{k}= [tex]\mu[/tex]

_{k}n

but I don't know what the normal force is. My only thought would be that n = mg, which means it would be .6 kg (5g + 1g = 6g). Is that correct? Any help would be appreciated. Please be detailed with each step, because I need to understand it and be able to show my work.