A Stone Is Thrown Downward from a Cliff

question 26

Multiple Choice

A stone is thrown downward from a cliff.Take "up" to be the positive direction.Which of the following statements is true about the stone?

• A) The velocity is negative,the acceleration is negative,and the speed is negative.
• B) The velocity is positive,the acceleration is negative,and the speed is positive.
• C) The velocity is negative,the acceleration is negative,and the speed is positive.
• D) The velocity is positive,the acceleration is positive,and the speed is positive.

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Definitions:

Ossification

The process by which bone is formed, renewed, and repaired in the body.

Folic Acid

A B-vitamin essential for the proper development of the human body, particularly critical in preventing neural tube defects in developing fetuses.

Folic Acid

A B-vitamin essential for cell growth and metabolism, important for the production of DNA and RNA, and crucial for preventing birth defects during pregnancy.

Calcium

A chemical element and essential nutrient that is crucial for many bodily functions, including bone health and nerve transmission.