Physics 1

Unit 5: Momentum

Linear Momentum • Impulse • Conservation of Momentum • Collisions

Lessons in this Unit

5.1 — Linear Momentum5.2 — Impulse Momentum Theorem5.3 — Conservation of Momentum5.4 — Collisions

Unit 5 Snapshot

In Unit 5, you use momentum to predict how objects interact during pushes, collisions, and separations. You’ll define momentum, connect force and time through impulse, apply conservation of momentum to isolated systems, and interpret collision outcomes using core physical reasoning.

  • Define linear momentum and explain what affects it.
  • Use impulse to connect force, time, and changes in momentum.
  • Apply conservation of momentum to closed-system interactions.
  • Analyze collisions, elastic vs. inelastic, using momentum ideas.

Complete Lessons 5.1–5.4 in order, then use the review, rework option, if needed, and ACT practice to prepare for the Egg Drop challenge.

Review & Practice

📚 Unit Review

Unit 5 Review — Concepts & Key Relationships

📝 Rework / Regrade

Unit 5 Rework — Improve Your Score

✅ ACT Practice

ACT #1 — Momentum ConceptsACT #2 — Impulse & Change in MomentumACT #3 — Conservation & Collisions

Summative Assessment

When you have completed the lessons, unit review, rework, if needed, and ACT practice, you are ready for the Unit 5 summative challenge.

Open Unit 5 Summative Challenge — Egg Drop