Bob and Biff Throw Identical Rocks Off a Tall Building

question 9

Multiple Choice

Bob and Biff throw identical rocks off a tall building at the same time.Bob throws his rock straight downward.Biff throws his rock downward and outward such that the angle between the initial velocity of the rock and the horizon is 30 degrees.Biff throws the rock with a speed twice that of Bob's rock.Which rock hits the ground first (assume the ground near the building is flat) ?

• A)They hit at the same time.
• B)Bob's rock
• C)Biff's rock
• D)Impossible to determine

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Definitions:

Nausea-Inducing Drug

A medication designed to provoke nausea as a side effect or for therapeutic purposes.

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An experimental device used in animal learning experiments, requiring the animal to perform a specific task, such as pulling a lever, to escape or obtain food.

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A principle in psychology stating that behaviors followed by positive outcomes tend to be repeated, whereas behaviors followed by negative outcomes are less likely to be repeated.

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The relational concept that denotes the timing and sequence of events or variables as they occur over time.