A Feather, Initially at Rest, Is Released in a Vacuum

question 11

Multiple Choice

A feather, initially at rest, is released in a vacuum 12 m above the surface of the Earth.Which of the following statements is correct?

• A)The maximum velocity of the feather is 9.8 m/s
• B)The acceleration of the feather decreases until terminal velocity is reached
• C)The acceleration of the feather remains constant during the fall
• D)The acceleration of the feather increases during the fall
• E)The acceleration of the feather is zero

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Definitions:

Demand Characteristics

Cues in an experiment that might inform participants of the purpose of the study or what behaviors are expected from them, potentially influencing the authenticity of their responses.

Random Assignment

A method used to place participants into groups in such a way that each participant has an equal chance of being assigned to any group.

Representative Sample

A sample that accurately reflects the characteristics of the population from which it is drawn, ensuring the generalizability of research findings.

Random Sample

A sampling method where each member of a population has an equal chance of being included in the sample, ensuring the sample's representativeness.