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Physicsbeginner

Mechanics from First Principles

Motion, forces, energy and momentum explained from everyday observations, with worked problems at each step.

Lessons
13 lessons in 4 modules
Study time
about 7 hours
Duration
~5 weeks at your own pace

Free plan: counts as one of your 2 new courses this month. Plans

What you'll learn

  • Describe motion with graphs and the equations of motion
  • Apply Newton's laws to solve force problems
  • Use work, energy and power to analyse systems
  • Apply conservation of momentum to collisions

Syllabus

  1. Module 1Describing motionKinematics.4 lessons
    1. Units, vectors and scalarsUse SI units and tell vectors from scalars.30 min
    2. Displacement, velocity and accelerationCalculate these quantities and read motion graphs.30 min
    3. Equations of motionSolve uniform-acceleration problems with the SUVAT equations.30 min
    4. Projectile motionAnalyse horizontal and vertical motion separately.30 min
  2. Module 2ForcesNewton's laws.3 lessons
    1. Newton's first and second lawsDraw free-body diagrams and apply F = ma.30 min
    2. Newton's third law and frictionIdentify action-reaction pairs and friction forces.30 min
    3. Circular motionExplain centripetal force and solve circular motion problems.30 min
  3. Module 3EnergyWork, energy and power.3 lessons
    1. Work and kinetic energyUse the work-energy theorem.30 min
    2. Potential energy and conservation of energySolve problems with energy conservation.30 min
    3. Power and efficiencyCalculate power and efficiency of machines.30 min
  4. Module 4Momentum and gravityCollisions and orbits.3 lessons
    1. Momentum and impulseRelate force, time and change in momentum.30 min
    2. CollisionsApply conservation of momentum to elastic and inelastic collisions.30 min
    3. Gravitation and orbitsUse Newton's law of gravitation to explain orbits.30 min