Key Takeaways
Lesson Description
Key Takeaways
• Work transfers energy.
• Mechanical energy consists of kinetic and potential energy.
• Total mechanical energy is conserved when non-conservative forces are absent.
• Power measures the rate of doing work.
• Springs store elastic potential energy.
Must Know Equations
Work:
W = Fd cosθ
Kinetic Energy:
KE = ½mv²
Gravitational Potential Energy:
PE = mgh
Elastic Potential Energy:
PE = ½kx²
Power:
P = W/t
Mechanical Energy:
E = KE + PE
Must Know Vocabulary
Work
Kinetic Energy
Potential Energy
Mechanical Energy
Power
Conservation of Energy
AP Exam Focus
• Apply conservation of mechanical energy.
• Compare work and energy.
• Analyze energy bar charts.