Part A Squids rely on jet propulsion to move around. A 2.00 kg squid (including

Question

Part A Squids rely on jet propulsion to move around. A 2.00 kg squid (including the mass of water inside the squid) drifting at 0.50 m/s suddenly expels 0.09 kg of water backward to quickly get itself moving forward at 2.50 Im/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. IA Value m Submit My Answers Give Up

Explanation / Answer

momentum is conserved

0.09*0.5m/s + 2*0.5 m/s = 2*2.5 m/s – 0.09*v

0.045 + 1 = 5 – 0.09*v

1.045 – 5 = – 0.09*v

v = 43.94 m/s

relative speed = 43.94+0.5

vr= 44.4 m/s

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