Two Rocks (Call Them S and T) Are Released at the Same

question 83

Multiple Choice

Two rocks (call them S and T) are released at the same time from the same height and start from rest.Rock S has 20 times the mass of rock T.Which rock will fall faster if the only forces involved are each rock's mutual gravitational attraction with Earth?

• A) rock S
• B) rock T
• C) Both rocks will fall at the same rate.
• D) Not enough information is available to answer.
• E) Neither rock will fall, because they will remain at rest.

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Definitions:

Positive External Benefits

benefits that result from a product or service's use that affect someone other than the direct buyer or seller, often leading to social gains.

Optimal Amount

The quantity of a good or service that achieves the best possible balance between costs and benefits.

Pigouvian Tax

A tax levied on activities that generate negative externalities, intended to correct the market outcome by internalizing the external costs.

Socially Optimal Level

The level of production or activity where the social benefits of consuming a good equal the social costs of producing it, often considered ideal from a societal perspective.