A Ball Is Dropped from a Building onto a Scale

question 36

Multiple Choice

A ball is dropped from a building onto a scale below. The scale reads 92.5 N at the moment of impact. What is the mass of the ball?

• A)9.2 kg
• B)-9.2 kg
• C)-9.4 kg
• D)9.4 kg

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Definitions:

Acid Rain

Precipitation with a lower pH than normal, caused by emissions of sulfur dioxide and nitrogen oxides from industrial processes and vehicles, which can harm ecosystems and human-made structures.

Secondary Pollutants

Pollutants that are not emitted directly into the air, but form when primary pollutants react in the atmosphere.

Earth's Surface

The outermost layer of the Earth, encompassing both land masses and water bodies.

Grey-Air Smog

A type of air pollution characterized by a mixture of pollutants, including particulate matter and chemicals, that gives the air a dirty, grey appearance.