A Stone Is Thrown with an Initial Speed of 15

question 9

Multiple Choice

A stone is thrown with an initial speed of 15 m/s at an angle of 53° above the horizontal from the top of a 40-m building.If g = 9.8 m/s² and air resistance is negligible,then what is the magnitude of the horizontal component of velocity as the rock strikes the ground?

• A) 7.5 m/s
• B) 9.0 m/s
• C) 12 m/s
• D) 29 m/s

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Definitions:

Semantic

Relates to the meanings of words and phrases in language.

Semantics

The study of meaning in language, focusing on the relationship between signifiers, like words, phrases, signs, and symbols, and what they stand for.

Syntax

A set of rules for arranging words and phrases to create well-formed sentences in a language.

Symbolic Structure

The use of symbols and signs in a systematic way to represent ideas or concepts in communication.