Three Spaceships A, B, and C Are in Motion as Shown

question 16

Multiple Choice

Three spaceships A, B, and C are in motion as shown in the figure. The commander on ship B observes ship C approaching with a relative velocity of 0.83c. The commander also observes ship A, advancing in the rear, with a relative velocity of 0.48c. As measured by commander on ship B, at what speed is ship A approaching ship C?

• A) 1.3c
• B) 0.94c
• C) 0.25c
• D) 0.58c
• E) 2.2c

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Definitions:

Castration Anxiety

A psychoanalytic concept referring to a deep fear of losing one's genitalia or their function.

Oedipus Complex

A concept in psychoanalytic theory referring to a child's unconscious sexual desire for the opposite-sex parent and jealousy toward the same-sex parent.

Defense Mechanism

A psychological strategy used unconsciously to protect oneself from anxiety or to minimize distressing thoughts and feelings.

Superego

Part of the unconscious that consists of absolute moral standards internalized from one’s parents during childhood and from one’s culture.