15. The 4 kg block just completed the trip shown. If no work was done, calculate...

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15. The 4 kg block just completed the trip shown. If no work was done, calculate its initial velocity. 120J is lost between B & C. The final velocity is 10m/s 12m 10M/S 8m W=0 12 mu, +mgh = 1/2mV2 'F + mahr + Fride 15. The 4 kg block just completed the trip shown. If no work was done, calculate its initial velocity. 120J is lost between B & C. The final velocity is 10m/s 12m 10M/S 8m W=0 12 mu, +mgh = 1/2mV2 'F + mahr + Fride