A Ball Is Thrown Straight Upward

question 12

Multiple Choice

A ball is thrown straight upward. Suppose that the height of the ball at time t is given by the formula h = - 18t ² + 126t, where h is in feet and t is in seconds, with t = 0 corresponding to the instant that the ball is first tossed. At what time(s) does the ball reach a height of 108 ft?

• A) 1 sec, 6sec
• B) 4 sec
• C) 3 sec
• D) 8 sec
• E) 3 sec, 8sec

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Definitions:

Aversive Conditioning

A behavioral technique that involves modifying behavior by associating an undesired behavior with an unpleasant stimulus.

Physical Pain

A distressing sensation and emotional experience associated with actual or potential tissue damage.

Operant Conditioning

A learning process through which the strength of a behavior is modified by reinforcement or punishment.

Token Economy

A behavioral modification system that uses tokens as a form of positive reinforcement for desirable behaviors, exchangeable for rewards.