Vector a Has a Magnitude of 3

question 10

Multiple Choice

Vector A has a magnitude of 3.0 units and makes an angle of −90.0º with the positive x-axis. Vector B has a magnitude of 4.0 units and makes an angle of −120º with the positive x-axis. What is the direction of the vector sum A + B relative to the positive x-axis?

• A) −107º
• B) 55º
• C) −55º
• D) −145º

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Definitions:

Critical Thinking

Aimed at conducting a thorough review and appraisal of a subject to make a decision.

Psychodynamic Perspective

A theoretical approach in psychology that emphasizes unconscious processes and childhood experiences in shaping behavior and personalities.

Biopsychosocial Approach

The biopsychosocial approach is a broad view that attributes disease outcome to the intricate, variable interaction of biological factors (genetic, biochemical, etc.), psychological factors (mood, personality, behavior, etc.), and social factors (cultural, familial, socioeconomic, medical, etc.).

Introspection

The examination or observation of one's own mental and emotional processes, reflecting on one's thoughts and feelings.