A Cannon Fires a Projectile as Shown

question 14

Multiple Choice

A cannon fires a projectile as shown. The dashed line shows the trajectory in the absence of gravity; points MNOP correspond to the position of the projectile at one second intervals. If g = 10 m/s², the lengths X,Y,Z are:

• A) 5 m, 10 m, 15 m
• B) 5 m, 20 m, 45 m
• C) 10 m, 40 m, 90 m
• D) 10 m, 20 m, 30 m
• E) 0.2 m, 0.8 m, 1.8 m

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Definitions:

Psychodynamic

A psychological perspective that emphasizes the complex interplay of unconscious and conscious forces that shape personality and behavior.

Cognitive-behavioral

A therapeutic approach that addresses dysfunctional emotions, behaviors, and cognitions through goal-oriented, systematic procedures.

Obsessive-compulsive Disorders

A type of anxiety disorder marked by uncontrollable, reoccurring thoughts (obsessions) and behaviors (compulsions) that the person feels the urge to repeat over and over.

Cognitive-behaviorist

A practitioner of cognitive-behavioral therapy, a form of psychotherapy that focuses on modifying dysfunctional emotions, behaviors, and thoughts by interrogating and uprooting negative or irrational beliefs.