A Rock,released at Rest from the Top of a Tower,hits

question 30

Multiple Choice

A rock,released at rest from the top of a tower,hits the ground after 2.0 s.What is the speed of the rock as it hits the ground? (g = 9.8 m/s² and air resistance is negligible)

• A) 15 m/s
• B) 20 m/s
• C) 31 m/s
• D) 39 m/s

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Definitions:

Estimated Percent

A calculated approximation, often used in statistics, reflecting the portion or fraction of a whole represented as a percentage.

Selection Biases

The distortion of statistical analysis resulting from the method of collecting samples, leading to non-representative samples that do not reflect the true population.

Favorable

Expressing approval or support; advantageous or beneficial in nature.

Dramatic

Pertaining to drama; characterized by aspects of drama or theatrical performance, often implying an emotional or unexpected event.