Answer to Question #330813 in Mechanics | Relativity for Zane

Question #330813

A trolley,mass 5kg moves at 4m.s east across a frictionless horizontal surface. A brick of mass 1.5kg is dropped onto the trolley . Calculate the change in momentum of the 5kg trolley

Expert's answer

"mv=(m+m_1)u,"

"u=\\frac{mv}{m+m_1}=3.1~\\frac ms."

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