Momentum, Impulse and collisions18. Animal Propulsion. Squids and octopuses propel themselves by expelling water. They do this bykeeping water in a cavity and then suddenly contracting the cavityto force out the water through an opening. A 6.50-kg squid(including the water in the cavity) at rest suddenly sees a dangerouspredator. (a) If the squid has 1.75 kg of water in its cavity, at whatspeed must it expel this water to suddenly achieve a speed of to 2.5m's escape the predator? Neglect any drag effects of thesurrounding water. (b) How much kinetie energy does the squidcreate by this maneuver?19. A 2.00-kg stone is sliding to the right on a frictionless horizontal surface at5.0 m/s when it is suddenly struck by an object that exerts a large horizontalforce on it for a short period of time. The graph in Fig. shows the magnitudeof this force as a function of time. (a) What impulse does this force exert on 250the stone? (b) Just after the force stops acting, find the magnitude anddirection of the stone's velocity if the force acts (6) to the right or (ii) to theleft.FN)I50 16020. PART-I: Two gliders with different masses move toward each other on a frictionless air track(shown Figure). After they collide glider B has a final velocity of +2.0 m's. What is the finalvelocity of glider A? How do the changes in momentum, in velocity and in kinetic energy compare?VAl = 2.0 ms vau= -20 m/s(a) Before collisionm, = 0.50 kg m, = 0.30 kg(b) Collisiom2.0 m/s(C) After collisionPART-II: If the collision completely 'inelastic"', what is the final velocity of glider A? How do thechanges in momentum, in velocity and in kinetic energy compare?PART-II: If the collision completely 'elastic", what is the final velocity of glider A? How do thechanges in momentum, in velocity and in kinetic energy compare?

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Animal Propulsion. 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 to 2.5 m's escape the predator? Neglect any drag effects of the surrounding water. (b) How much kinetic energy does the squid create by this maneuver?

Animal Propulsion. 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 to 2.5 m's escape the predator? Neglect any drag effects of the surrounding water. (b) How much kinetic energy does the squid create by this maneuver?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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