A Railroad Car Collides with and Sticks to an Identical

question 36

Multiple Choice

A railroad car collides with and sticks to an identical railroad car that is initially at rest. After the collision, the kinetic energy of the system

• A) is one quarter as much as before.
• B) is the same as before.
• C) is one third as much as before.
• D) is one fourth as much as before.
• E) is half as much as before.

---

Definitions:

Construct Validity

The extent to which a test measures what it claims to be measuring, in the context of psychological testing and research.

Mundane Realism

Refers to whether the setting of an experiment physically resembles the real world.

Reactance

An unpleasant emotional response that people often experience when someone is trying to restrict their freedom.

Deception Studies

Research studies that withhold information from participants or intentionally mislead them about the purpose of the study.