A Rock Is Thrown Straight Up and Reaches a Maximum

question 43

Multiple Choice

A rock is thrown straight up and reaches a maximum height.Which of the following describes the motion at the maximum height?

• A) the velocity is zero and the acceleration is zero
• B) the velocity is maximum and the acceleration is zero
• C) the acceleration is increasing and the velocity is zero
• D) the acceleration is not changing and the velocity is zero

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Definitions:

DEF Tank

A storage container usually found in diesel vehicles, holding Diesel Exhaust Fluid (DEF) used to reduce pollutants emitted from the exhaust.

Expansion Tank

A component in a heating or cooling system that accommodates the expansion and contraction of fluid, preventing pressure damage.

ILSAC Standards

A set of performance criteria established by the International Lubricant Standardization and Approval Committee for automotive engine oils that ensure compliance with the efficiency and emission requirements.

GF-5 Ratings

Specifications defining the quality and performance characteristics of engine oils, established by the International Lubricants Standardization and Approval Committee (ILSAC).