An Object Is Dropped from a Bridge

question 3

Multiple Choice

An object is dropped from a bridge. A second object is thrown downwards 1.00 s later. They both reach the water 20.0 m below at the same instant. What was the initial speed of the second object?

• A) 4.91 m/s
• B) 14.6 m/s
• C) 9.90 m/s
• D) 19.6 m/s
• E) 21.3 m/s

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Definitions:

Adolescents

Individuals in the transitional stage of physical and psychological development that generally occurs during the period from puberty to legal adulthood.

Preconscious

Refers to the thoughts, feelings, and memories that are not in immediate conscious awareness but can be easily accessed.

Superego

A component of Freud's psychoanalytic theory, representing the moralistic part of the mind that incorporates social standards and ideals.

Ego-ideal

A component of the psyche that represents an individual's standards of perfection and aspirations.