A Heavy Rock and a Light Rock Are Dropped from the Same

question 51

Multiple Choice

A heavy rock and a light rock are dropped from the same height and experience no significant air resistance as they fall.Which of the following statements about these rocks are correct? (There could be more than one correct choice. )

• A)Both rocks have the same kinetic energy when they reach the ground.
• B)Both rocks have the same speed when they reach the ground.
• C)The heavier rock reaches the ground before the lighter rock.
• D)Just as they were released,both rocks had the same amount of gravitational potential energy.
• E)When they reach the ground,the heavier rock has more kinetic energy than the lighter rock.

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Definitions:

Binomial Distribution

A probability distribution that summarizes the likelihood that a variable will take one of two independent values under a given set of parameters.

Random Variable

A random variable is a variable whose possible values are numerical outcomes of a random phenomenon.

Success Probability

The likelihood or chance of a particular event or outcome happening, often expressed in terms of percentage or decimal.

Poisson Random Variable

A statistical measure that expresses the probability of a given number of events occurring in a fixed interval of time or space, assuming these events happen with a known constant mean rate and independently of the time since the last event.