Contact Forces

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Objective

I can explain how contact forces cause changes in the structure of objects during collisions.

Part 1 of 3

Warm-up video

Unknown Channel · 5:00

We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

12 questions

1

Define "normal force" and explain how it relates to the surface of an object.

2

Explain the difference between static and kinetic friction, providing an example of each from the video or your own experience.

Part 3 of 3

Exit ticket

Quick comprehension check

Describe a scenario where a contact force causes a visible change in the structure of an object. Explain which object applies the force, which object experiences the force, and how the structure changes. Explain how the contact force between a hammer and a nail changes the structure of the wood the nail is being hammered into.

Sample answer included in the free materials

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Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

    Complete lesson plan with answer keys and alternate activities

  • Student Handout

    Printable worksheet

  • Slides

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