An 80-G Particle Moving with an Initial Speed of 50

question 60

Multiple Choice

An 80-g particle moving with an initial speed of 50 m/s in the positive x direction strikes and sticks to a 60-g particle moving 50 m/s in the positive y direction. How much kinetic energy is lost in this collision?

• A) 96 J
• B) 89 J
• C) 175 J
• D) 86 J
• E) 110 J

Recognize the importance of and methods for establishing construct validity in the absence of random assignment.

Identify when and how to apply interrupted time series design and its variations for research.

Distinguish selection biases and their impact on the internal and external validity of a study.

Understand the principle of utility and its application in resolving the water-diamond paradox.

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Definitions:

Hierarchy Needs

A theory in psychology, proposed by Abraham Maslow, suggesting that people are motivated by five basic categories of needs: physiological, safety, love/belonging, esteem, and self-actualization, which form a hierarchy.

Self-actualization

The realisation or fulfilment of one's talents and potentialities, considered as a drive or need present in everyone.

Maslow's Hierarchy

A theory of psychological health predicated on fulfilling innate human needs in a priority, culminating in self-actualization.

Will Meaning

Denotes the mental faculty by which one deliberately chooses or decides upon a course of action.