A Ball Has Been Thrown Vertically Upward

question 73

Multiple Choice

A ball has been thrown vertically upward. The graph shows the ball's position as a function of time. Which one of the following statements best describes the motion of the ball?

• A) The velocity of the ball is the same at points A, B, C, D, and E.
• B) The acceleration of the ball is 9.8 m/s² at points A, B, D, and E and zero at point C.
• C) The acceleration of the ball is -9.8 m/s² at points A, B, D, and E and zero at point C.
• D) The ball is the same distance above the ground at points B and D.
• E) The velocity of the ball changes continuously during its flight.

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Definitions:

Price System

A mechanism through which prices adjust to balance supply and demand for goods and services in an economy.

Centralized Planning

A system of economy where all choices related to the creation and allocation of goods and services are made by a central governmental body.

Competitive Markets

Markets where many buyers and sellers trade goods and services under conditions of few restrictions, leading to the best prices for both parties.

Opportunity Cost

The advantage lost by selecting one option instead of another.