A Swimmer Heading Directly Across a River That Is 200

question 139

Multiple Choice

A swimmer heading directly across a river that is 200 m wide reaches the opposite bank in 6 min 40 s. During this swim, she is swept downstream 480 m. What is the speed of the current?

• A) 1.4 m/s
• B) 1.2 m/s
• C) 0.50 m/s
• D) 0.80 m/s
• E) 1.8 m/s

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Definitions:

Defense Mechanisms

Psychological strategies employed by individuals to protect themselves from unacceptable thoughts or feelings.

Mental Health

A state of well-being in which an individual realizes his or her own abilities, can cope with the normal stresses of life, work productively, and is able to make contributions to his or her community.

Libido

In psychoanalytic theory, a term referring to the energy derived from sexual instincts and desires that drive individuals in their actions and behaviors.

Psychic Energy

A concept in psychoanalytic theory referring to the force behind human drives, desires, and mental processes.