A Juggler Throws Two Balls Up to the Same Height

question 112

Multiple Choice

A juggler throws two balls up to the same height so that they pass each other halfway up when A is rising and B is descending. Ignore air resistance and buoyant forces. Which statement is true of the two balls at that point?

• A) There is an residual upward force from the hand on each ball.
• B) There is a greater residual force from the hand on A than there is on B.
• C) Only gravity acts on B but there is an additional residual force from the hand on A.
• D) There is an additional downwards force besides gravity on each ball.
• E) The only force acting on each ball is the gravitational force.

---

Definitions:

Constructs

A concept or model meant to help understand the world, often used to group various ideas or phenomena in psychology, sociology, and other social sciences.

Indicator Variables

Variables in statistical analyses that are used to represent subgroups and measure categorical variables, often in the form of 0/1 binary indicators.

Concepts

Abstract ideas or mental symbols that represent phenomena or objects, used to understand and communicate about the world.

Variables

Quantifiable or qualifiable characteristics, factors, or conditions that can vary or change within a study or evaluation.