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Questions and Answers
What are the x- and y-components of the vector? Include the correct signs.
What are the x- and y-components of the vector? Include the correct signs.
x-component: __, y-component: __
What is the magnitude of the vector?
What is the magnitude of the vector?
__
What angle does the vector make with the +x-axis, in degrees?
What angle does the vector make with the +x-axis, in degrees?
__
How far does the object go in the time interval 1.0 s < t < 2.0 s?
How far does the object go in the time interval 1.0 s < t < 2.0 s?
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Does the object ever change direction?
Does the object ever change direction?
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Match the following terms with their values:
Match the following terms with their values:
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For what time interval is the acceleration negative?
For what time interval is the acceleration negative?
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Study Notes
Physics Exam Notes
- The exam paper is for Physics 121, with a cover sheet that includes the student's name, section, and time.
- The exam includes questions that cover topics like vector analysis, motion, and velocity.
- Vectors have x and y components, and the magnitude is calculated using the Pythagorean theorem.
- The angle a vector makes with the x-axis is found using the arctangent function.
- The exam includes a v-t graph, where v represents velocity and t represents time.
- The area under the curve of a v-t graph represents displacement.
- The slope of a v-t graph represents acceleration.
- The exam also includes an x-t graph, where x represents position and t represents time.
- The slope of an x-t graph represents instantaneous velocity.
- The exam includes multiple choice questions requiring matching concepts to definitions.
- The exam includes a question about the time interval for which the acceleration is negative.
- The exam has a total of 10 points, with various point values assigned to each question.
- Free-response items require clear evidence of reasoning and supporting work to receive credit.
- Numerical answers should be given to two significant figures with appropriate units.
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Description
Prepare for your Physics 121 exam with these detailed notes that cover essential concepts such as vector analysis, motion, velocity, and graphing techniques. Understand how to interpret v-t and x-t graphs, calculate magnitudes, and analyze acceleration. This guide will help you brush up on key definitions and concepts in preparation for the exam.
