Work, Energy & Momentum — Chapter overview · Physics & Environmental Science, Grade 12
Account for work, power, stored energy, collisions, and force-time evidence.
Chapter question
Which system quantities remain conserved and under what conditions?
Units in this chapter
- Unit 4.1 · Work & Power
I can calculate the work done by a force using W = Fd (and W = Fd·cosθ when the force acts at an angle).
- Unit 4.2 · Kinetic & Potential Energy
I can calculate kinetic energy with KE = ½mv² and gravitational potential energy with PE = mgh.
- Unit 4.3 · Conservation of Energy
I can apply conservation of mechanical energy (KE + PE = constant) to solve for speeds and heights in ideal systems.
- Unit 4.4 · Momentum & Collisions
I can calculate momentum with p = mv and apply the impulse-momentum relationship J = FΔt = Δp.
- Unit 4.5 · Impulse & Collision Evidence
I can use a force-time area to calculate signed momentum change.