A Stone Is Thrown at an Angle of 45° Above

question 30

Multiple Choice

A stone is thrown at an angle of 45° above the horizontal from the top edge of a cliff with an initial speed of 15 m/s.A stop watch measures the stone's trajectory time from top of cliff to bottom to be 5.4 s.How far out from the cliff's edge does the stone travel horizontally? (g = 9.8 m/s² and air resistance is negligible)

• A) 57 m
• B) 81 m
• C) 202 m
• D) 86 m
• E) 200 m

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Definitions:

Survey Method

A research technique used to gather data through questionnaires or interviews from a sample of individuals.

Case Study

A research method that involves an in-depth analysis of a single individual, group, event, or situation to explore causation in order to find underlying principles.

Single-blind Study

A study design where the participants do not know which group (experimental or control) they are in to prevent bias, but the researchers do.

Descriptive Research

A research method aimed at describing characteristics of a population or phenomenon being studied without influencing those characteristics.