What Slows a Car Down?

What You'll Learn

Brakes on a bike use friction to slow down and stop. Press the brakes and friction does the work!

Step 1 — Read

Read the introduction. What is this lesson about?

Step 2 — Do

Test a magnet on 10 objects around your house. Make a list of what sticks and what doesn't.

Step 3 — Observe

Look for something that changed. What is it?

Step 4 — Record

Circle the correct answer on your worksheet.

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What kind of surface has the most friction?