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:

Correlation Coefficient

A statistical measure that indicates the extent to which two variables fluctuate together. A positive correlation indicates that as one variable increases, the other does too, and vice versa for a negative correlation.

Correlation Coefficients

Statistical measures that quantify the degree to which two variables are related, indicating the strength and direction of a relationship.

Sexual Harassment

Unwelcome sexual advances, requests for sexual favors, and other verbal or physical harassment of a sexual nature.

Illusory Correlation

The perception of a relationship between two variables when no such relationship exists or the perception is stronger than the actual relationship.