A Spring with a spring constant 2.2 N/cm is compressed 28cm andreleased. The 4 kg mass skids down the frictional incline of height43cm and inclined at a22 degree angle. The acceleration of gravityis 9.8m/s2 . The path is frictionless except for adistance of 0.9 m along the incline which has a coefficient offriction of 0.4. K= 2.2N/cm. What is the final velocityvf of the mass? Answer in units of m/s.

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