Free Fall: a Ball Is Thrown Directly Upward and Experiences

question 17

Multiple Choice

Free fall: A ball is thrown directly upward and experiences no air resistance. Which one of the following statements about its motion is correct?

• A) The acceleration of the ball is upward while it is traveling up and downward while it is traveling down.
• B) The acceleration of the ball is downward while it is traveling up and upward while it is traveling down.
• C) The acceleration is downward during the entire time the ball is in the air.
• D) The acceleration of the ball is downward while it is traveling up and downward while it is traveling down but is zero at the highest point when the ball stops.

---

Definitions:

Equilibrium Quantity

The quantity of goods or services bought and sold at the equilibrium price, where demand equals supply.

Negative Externality

occurs when the production or consumption of a good or service imposes costs on third parties not directly involved in the transaction.

Government Intervention

Actions taken by a government to influence or regulate the economy or specific industries, often to correct market failures or promote social welfare.

Equilibrium Quantity

The quantity of goods or services supplied that is equal to the quantity demanded at the market equilibrium price.