When a Rock Thrown Straight Upward Gets to the Exact

question 45

Multiple Choice

When a rock thrown straight upward gets to the exact top of its path, its velocity is

• A)zero and its acceleration is zero.
• B)zero and its acceleration is about 10 m/s2.
• C)about 10 m/s and its acceleration is zero.
• D)about 10 m/s and its acceleration is about 10 m/s2.
• E)none of the above

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Definitions:

Bernoulli Experiment

A random experiment with exactly two possible outcomes, often termed success and failure.

Probability Density Function

A Probability Density Function (PDF) is a function that describes the relative likelihood for a continuous random variable to take on a given value.

Expected Value

A statistical measure that calculates the average outcome of a random variable after many repetitions of an experiment.

Random Variable

A variable that can take numeric values, which are the results of a random event.