Squids rely on jet propulsion to move around. A1.80 kg squid (including the mass

Question

Squids rely on jet propulsion to move around. A1.80 kg squid (including the mass of water inside the squid) drifting at 0.46 m/s suddenly expels 0.09 kg of water backward to quickly get itself moving forward at 2.50 m/s .

If drag is ignored over the small interval of time needed to expel the water (the impulse approximation), what is the water's ejection speed relative to the squid?

Express your answer to three significant figures and include the appropriate units.

-Please show each step if you have the time to, thank you!

Explanation / Answer

conservation of momentum apply here

mw*0.46 + ms*0.46 = ms*2.5 - mw * v

here mw = mass of water

ms = mass of squid

v = 40.34 m/s = 40.3 m/s

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