A Mass Is Pressed Against (But Is Not Attached To)

question 9

Multiple Choice

A mass is pressed against (but is not attached to) an ideal horizontal spring on a frictionless horizontal surface. After being released from rest, the mass acquires a maximum speed v and a maximum kinetic energy K. If instead the mass initially compresses the spring twice as far:

• A) Its maximum speed will be 2v and its maximum kinetic energy will be 2K.
• B) Its maximum speed will be 2v and its maximum kinetic energy will be K.
• C) Its maximum speed will be v and its maximum kinetic energy will be 2K.
• D) Its maximum speed will be 2v and its maximum kinetic energy will be 4K.
• E) Its maximum speed will be 4v and its maximum kinetic energy will be 2K.

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Definitions:

Developmental Crises

Critical stages or turning points in an individual's life where significant change or decision making is required, affecting future outcomes.

Id, Ego, Superego

Components of Sigmund Freud's psychoanalytic theory of personality, representing the instinctual drives, the realistic part, and the moral conscience, respectively.

Reinforcement

A process in behavior analysis that increases the likelihood of a behavior by adding or removing a stimulus after the behavior.

Positive Reinforcer

A reinforcer that, when applied, increases the frequency of a response.