A closed system consists of 2 objects. Initially, object A has amomentum of 46 k

Question

A closed system consists of 2 objects. Initially, object A has amomentum of 46 kg·m/snorth and object B has a momentum of 73 kg·m/s south. The twoobjects have a head-on collision. Afterwards, object A is observedto have a momentum of 43 kg·m/ssouth. After the collision, what is object B'smomentum?
1 kg·m/s

2 East
West
Up
Down
North
South
Left
Right
No direction because object B hasstopped
2 East
West
Up
Down
North
South
Left
Right
No direction because object B hasstopped
2 East
West
Up
Down
North
South
Left
Right
No direction because object B hasstopped
2

Explanation / Answer

From the law of conservation of momentum                PA - PB = -P'A+P'B                46 kg. m/s - 73kg·m/s = -  43 kg·m/s + P'B               P'B = 16kg. m/s North
                         P'B = 16kg. m/s North
          

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