Conservation of Momentum in a Fishy Encounter

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SUMMARY

The discussion centers on the application of the conservation of momentum principle in a scenario involving a 5 kg fish and a 1 kg fish. The larger fish, initially swimming at 1 m/s, swallows the smaller fish at rest, resulting in a final speed of -5 m/s for the larger fish. If the smaller fish were swimming towards the larger fish at 4 m/s, the final speed would need to be recalculated using the conservation of momentum equation, momentum = mv.

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Homework Statement



A 5kg fish is swimming at 1m/s swallows an absent minded fish swimming 1kg fish at rest. (a) Show that the speed of the larger fish after lunch is -5m/s. What would be its speed if the smaller fish was traveling toward it at 4m/s

Homework Equations



momentum=mv?

The Attempt at a Solution


I don't know what to do...sorry
 
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You can use conservation of momentum, but first you need to correct your problem statement '..fish swimming 1kg fish at rest..' :confused:
 

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