Newton's Third Law: Action and Reaction (Part 2)

What You'll Learn

Newton's third law states that for every action there is an equal and opposite reaction. When you push against a wall, the wall pushes back on you with the same force.

Key Words

friction
inertia

Materials Needed

cardboard
marbles
paper clips

Safety First

Do not look directly at the sun or bright lights.
Clean up spills immediately to prevent slipping.
Use materials only as directed in the experiment.

Steps

Step 1 — Read

Read and learn: Newton's third law states that for every action there is an equal and opposite reaction. When you push against a wall, the wall pushes back on you with the same force.

Step 2 — Do

Build your model using the materials provided.

Step 3 — Observe

Use your senses (except taste) to describe what you notice.

Step 4 — Record

Write a summary of your findings in 3-5 sentences.

Check Your Understanding

Question 1

1 of 3

What is gravity?