Vsquid Vwater FIGURE II.1

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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Squid usually move by using their fins, but they can utilize a form of jet propulsion, ejecting water at high speed to rocket them backward, as shown. A 4.0 kg squid can slowly draw in and then quickly eject 0.30 kg of water. The water is ejected in 0.10 s at a speed of 10 m/s. This gives the squid a quick burst of speed to evade predators or catch prey.

This form of locomotion is speedy, but is it efficient? The energy that the squid expends goes two places: the kinetic energy of the squid and the kinetic energy of the water. Think about how to define “what you get” and “what you had to pay”; then calculate an efficiency for this particular form of locomotion. (You can ignore biomechanical efficiency for this problem.)

Vsquid
Vwater
FIGURE II.1
Transcribed Image Text:Vsquid Vwater FIGURE II.1
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