Bear takes his skateboard on a track. He begins from rest at point A. The track he travels on is frictionless, except fo

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Bear takes his skateboard on a track. He begins from rest atpoint A. The track he travels on is frictionless, except for arough patch between points B and C, where the coefficient ofkinetic friction is 0.3. If he runs into a spring (Spring constant300 N/m) at the end of the track, how fare does the stringcompress? Bear and his skateboard have a combined mass of 2 kg.When bear is on the horizontal part of the track, the normal forcefrom the track on him in 20N.