Khaemenes High · Physics & Engineering 12

Grade 12 · Week 08 · U2

Friction, Circular Motion & Constraints

Essential question: Why do curved paths require inward net force?

Standards: HS-PS2-180% mastery + correctionsPortfolio evidence

Physics 12 · Week 08 Friction and Circular Motion Studio

Five full lessons, worked examples, two offline model labs, friction and circular-motion games, teacher notes, synthetic data, and randomized student practice. The original weekly evidence notebook remains below.

Monday · Constant Speed, Changing VelocityTuesday · The Force Behind the CurveWednesday · Static Friction's ThresholdThursday · Two Controlled LaboratoriesFriday · CER & Weekly MasteryCircular Motion StudioFriction & Contact LabTeacher/Parent GuideCircular Data CSVFriction Data CSV

Monday

Phenomenon / Launch

A car can move at constant speed but still require a net force while turning.

Learning target

Build an initial model and explanation for: Why do curved paths require inward net force?

Evidence task

Record observations, questions, an initial model, and one claim that could be tested. Use these concepts where relevant: friction; normal force; centripetal acceleration; tension; curve.

Tuesday

Concept & Model Revision

Study and explain the week's core ideas: friction; normal force; centripetal acceleration; tension; curve

Reading

Open dynamics/circular motion text.

Evidence task

Revise Monday's model. Add two evidence-backed annotations and explain one limitation or uncertainty.

Wednesday

Data & Quantitative Reasoning

Friction models and centripetal relations.

Evidence task

Show units, setup, calculation or graph reasoning, then write what the quantitative evidence can and cannot establish about: Why do curved paths require inward net force?

Thursday

Investigation / Engineering

Circular-motion simulation; no swinging heavy objects.

Safety boundary

Use the course safety charter. If supervision, facilities, materials, or conditions are not appropriate, use the supplied-data/simulation alternative rather than improvising hazardous procedures.

Evidence task

Record variables or design constraints, procedure/model, observations/data, and one revision you would make after reviewing the evidence.

Friday

CER / Synthesis

Answer the essential question: Why do curved paths require inward net force?

Mastery evidence

Submit a claim, at least two specific pieces of evidence, reasoning that connects them, one limitation/counterclaim, and a correction note for any essential concept below 80%.

Portfolio

Select one artifact from this week and explain why it is trustworthy evidence of growth.