1.

Calculate the change in momentum of a van weighing 1200 kg when its speed decreases from 72 km/hr to 54 km/hr uniformly.

Answer»

change in momentum is m(v1-v2)=1200((72-54)/3.6))=1200(5)=6000kgm/s..divided by 3.6 to convert km/hr to m/s



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