A cheering squad is made up of three members: Lynne of 50kg moving at 3 m/sNorth. Angie of mass 58kg moving eastward at 3 m/s and Mercy of mass 6 kg moving at 3 m/s south. What is the combined momentum of the squad?
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Expert's answer
2021-12-21T12:15:40-0500
Find the combined momentum. The momentum has direction equal to the direction of velocity, the equation is p=mv.
pL=50⋅3=150 kg⋅m/s N.pA=58⋅3=174 kg⋅m/s E.pM=60⋅3=180 kg⋅m/s S.pNorth=pL−pM=150−180=−30 kg⋅m/s N.pEast=174 kg⋅m/s N.pCombined=pEast2+pNorth2=177 kg⋅m/s N.θ=arctanpEastpNorth=9.8° S of E.
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