You Drop a Stone Down a Well That Is 9

question 5

Multiple Choice

You drop a stone down a well that is 9.5 m deep.How long is it before you hear the splash? The speed of sound in air is 343 m/s and air resistance is negligible.

• A)1.2 s
• B)1.3 s
• C)1.4 s
• D)1.5 s
• E)1.6 s

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Definitions:

Primitive

Referring to the early and undeveloped stage in the evolution of something.

Codiscoverer

An individual who, along with one or more others, is credited with the discovery of something.

Natural Selection

The process whereby organisms better adapted to their environment tend to survive and produce more offspring.

Genetic Material

Molecules within cells that carry genetic information, primarily DNA or, in some viruses, RNA.