An Open Freight Car Rolls Friction Free Along a Horizontal

question 48

Multiple Choice

An open freight car rolls friction free along a horizontal track in a pouring rain that falls vertically. As water accumulates in the car, the car's speed

• A)increases.
• B)decreases.
• C)doesn't change.
• D)need more information

---

Definitions:

A-type Steel Sheets

A classification of steel sheets, this term may refer to a specific quality, grade, or characteristic defined by a manufacturing or industry standard (assuming hypothetical; otherwise NO).

Solver

An optimization tool used in computational software that finds the maximum or minimum value of a function under given constraints.

Optimal Number

The most favorable quantity that leads to the best outcome or efficiency under given conditions.

Monthly Profit

The financial gain or loss calculated at the end of each month, resulting from revenue minus expenses.