GRE Subject Test: Physics

The GRE Subject Test in Physics assesses knowledge and understanding of undergraduate-level physics concepts and principles.

Basic Concepts

Classical Mechanics

Understanding Motion

Classical mechanics is the foundation of physics, describing how objects move under the influence of forces. It covers everything from falling apples to orbiting planets.

Key Concepts

  • Newton's Laws of Motion: The building blocks for predicting how objects behave.
  • Work, Energy, and Power: How energy is transferred and transformed.
  • Conservation Laws: Energy and momentum are not lost, only changed in form.

Real-World Impact

From car safety designs to predicting the motion of satellites, classical mechanics is everywhere.

Simple Equations

The most basic equation is Newton's second law: \( F = ma \), where force equals mass times acceleration.

Key Formula

\[F = ma\]

Examples

  • Calculating the acceleration of a car when a force is applied.

  • Predicting the landing spot of a thrown ball.

In a Nutshell

Classical mechanics explains how and why objects move using Newton's laws.

Key Terms

Force
A push or pull on an object causing it to accelerate.
Momentum
The quantity of motion, given by mass times velocity.
Conservation
A property that remains constant within a closed system.