A Person Standing on Top of a 40-M High Cliff

question 66

Multiple Choice

A person standing on top of a 40-m high cliff throws a rock with a mass of 0.25 kg off the cliff.The rock leaves the person's hand with a speed of 11 m/s and makes an angle of 75 degrees above the horizontal.What is the speed of the rock when it hits the ground at the bottom of the cliff?

• A)26 m/s
• B)28 m/s
• C)30 m/s
• D)49 m/s
• E)52 m/s

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Definitions:

Negative Reinforcement

A behavioral principle where the removal of an unfavorable event or outcome strengthens the behavior that led to its removal.

Punishment

The weakening (decrease in frequency) of a response because it is followed by the arrival of a (presumably) unpleasant stimulus.

Noxious Stimulus

An unpleasant or harmful stimulus that causes discomfort or pain.

Aversive Stimulus

An unpleasant or harmful stimulus used to reduce or eliminate an undesirable behavior.