The correct answer is 740
Answer:
The coefficient of kinetic is

Explanation:
The forces in the axis 'x' and 'y' using law of Newton to find coefficient of kinetic friction
ΣF=m*a
ΣFy=W-N=0
ΣFy=Fn-Fu=m*a


Now to find the coefficient can find the acceleration using equation of uniform motion accelerated

So replacing the acceleration can fin the coefficient:

I believe the answer is C
Hope this helps :)
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