🎯 Objective

Experiment with different forces to change how objects move.

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🧩 Materials

• 🚗 Toy that rolls (car or ball)
• 🪞 Smooth surface (table or floor)

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🔬 Experiment 1: Apply a Force to Move an Object

1. Place your toy on a smooth, level surface.
2. Push the toy to make it move.
3. When you push the toy, you use a force that makes it move.

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🧠 Experiment 2: Let the Force of Friction Stop a Moving Object

1. Place your toy on the smooth surface again.
2. Push it and let it roll without touching it.
3. Watch it slow down and stop.
   💡 Why did it stop all on its own?
   Because of the force of friction!

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✋ Experiment 3: Apply a Force to Stop a Moving Object

1. Place your toy on the smooth surface.
2. Push it to make it move.
3. Use your hand to gently stop it.
   You used a force to stop a moving object.

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🎠 Experiment 4: Make Your Own Merry‑Go‑Round

1. In a safe, cleared area, clasp both hands with a partner.
2. Face each other and spin in a circle.
3. (Don’t do this!) What would happen if you suddenly let go while spinning fast?
   The force you and your partner use with your hands to keep moving in a circle is called centripetal force.
   That’s the same force Peter and Polly used to stay safely on the merry‑go‑round!

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