Module 4 Chapter 31 Multiple choice questions 31.5

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. Suppose an adult fox spots a rabbit and decides to run towards its prey. This movement will be partly determined by the mass of the fox. So, if the force (F) used by the fox to move is 15 N and the acceleration (a) is 3.0 m/s², what is the mass (m, in kg) of the fox? Use the formula F = ma.

0.2 kg correct incorrect

5.0 kg correct incorrect

13.0 kg correct incorrect

45.0 kg correct incorrect

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. Active location involves the use of muscular forces that move limbs against _______ exerted by the animal's environment.

passive movement correct incorrect

movement of other limbs correct incorrect

no resistance correct incorrect

equal and opposite forces correct incorrect

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