Squids and octopuses propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity to force out the water through an opening. A 6.50-kg squid (including the water in the cavity) at rest suddenly sees a dangerous predator. (a) If the squid has 1.75 kg of water in its cavity, at what speed must it expel this water to suddenly achieve a speed of 2.50 m/s to escape the predator? Neglect any drag effects of the surrounding water. (b) How much kinetic energy does the squid create by this maneuver?

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A: Solution: As given

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Q: A block of mass m = 3.6 kg, moving on a frictionless surface with a speed vi=9.3m/s makes a sudden…

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A: Solution is given below.

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Q: A block of mass m = 8.40 kg, moving on a horizontal frictionless surface with a speed 4.20 m/s,…

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Q: A rubber ball with a mass of 0.160 kg is dropped from rest. From what height (in m) was the ball…

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