PreparED Study Materials
PHYS 225: Introductory Mechanics Laboratory
School: Catholic University of America
Number of Notes and Study Guides Available: 0
Videos
Car Spring Oscillations: Frequency When Driving Over Bumps Explained!
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Discover the math behind car spring oscillations when driving over bumps. Understand how a car's weight and driver affect the spring constant and resulting frequency. Grasp the interplay of forces and how they dictate harmonic motion.
Electromagnetic vs. Gravitational Forces: A Comparative Analysis
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Explore the relative strengths of two fundamental forces, the electromagnetic force and the gravitational force, in this enlightening physics tutorial. Learn about Coulomb's law and Newton's law of gravitation, and uncover the significant difference in their constants that makes the electromagnetic force much more powerful than gravity.
Warm Hands by Friction: Temperature Increase Calculation
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Join us to explore the science of hand-warming through friction in this video. We calculate the temperature increase as a woman rubs her hands together, converting work into thermal energy. Dive into the physics of heat generation and discover how friction can keep you warm.
Tennis Ball Momentum and Change in Direction
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Explore the physics of a tennis ball hitting a wall and its momentum changes. Learn about the original momentum, changes, and the concept of reference objects in this engaging video.
Understanding the Law of Conservation of Mass in Chemical Reactions
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Explore the fundamental principles of this law, unraveling its implications, and clarifying common misconceptions related to mass preservation in chemical reactions.
Comparing Rug Dimensions and Area: The Relationship
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Step into the showroom as we explore the intriguing connection between rug dimensions and area. Learn whether a rug being twice as long as another implies its area is also doubled. Join us for a comprehensive explanation of this geometric concept.

















