Work, Energy, and Power
AP Physics 1 • Unit 518-23%
A powerful alternative to force analysis using energy methods. Conservation of energy provides elegant solutions to problems that would be difficult using Newton's laws alone.
Core Concepts
- Work – energy transfer via force over displacement, measured in Joules
- Kinetic energy – energy of motion, KE = ½mv²
- Gravitational PE – energy stored in height via conservative work
- Elastic PE – energy stored in springs via spring work
- Conservation of energy – solving without knowing forces, conservative vs non-conservative
- Work-energy theorem – net work = ΔKE
- Power – rate of energy transfer
Key Equations
Real-World Applications
- →Roller coaster speeds and heights
- →Car braking and power dissipation
- →Pendulum swings and tension analysis
- →Spring-loaded systems and ski ramps
Topic Map
🎯Where This Unit Leads
Master this material to build a strong foundation for these career paths.
Mechanical Engineering
Becomes first law of thermodynamics and machine design
See course map →Aerospace Engineering
Aircraft performance and orbital energy calculations
See course map →Chemical Engineering
Energy balances throughout the curriculum
See course map →Electrical Engineering
Power analysis parallels in circuit design
See course map →Chemistry
Thermodynamics and reaction energetics
See course map →Physics
Energy methods used throughout physics
See course map →Explore Other Units
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