How Many Forces Need to Be Applied to a Body

question 98

Multiple Choice

How many forces need to be applied to a body in space to keep it moving with a constant velocity?

• A) one force, in the direction of motion
• B) none
• C) two unequal forces
• D) one force, in a direction opposite to the direction of motion

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Definitions:

Random Sampling

The process of selecting a subset of individuals from a population in such a way that every individual has an equal chance of being selected.

Statistical Applications

The use of statistical techniques and methodologies to solve real-world problems, analyze data, and make informed decisions.

Random Variables

Variables whose possible values are numerical outcomes of a random phenomenon.

Judgment Sampling

A non-probability sampling method where the researcher selects units to be sampled based on their knowledge and professional judgment.