So, we can write the equation as:
\[ \frac{1}{2} m v^2 = F_f x + \frac{1}{2} k x^2 \]
where \(m\) is the mass of the block, \(v\) is the velocity of the block, \(F_f\) is the frictional force, \(x\) is the displacement (compression in the spring), and \(k\) is the
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