1. Newton’s 1st
Explaining Inertia

2. Toppling Towers
Why don’t the blocks ABOVE a card move when the card is pulled out? Write your own explanation in your notebook. Label it as “my idea…”

3. Watch some more examples of things staying still… https://www. youtube
click on the picture to launch video

4. Newton’s 1st Law things that are stopped stay stopped
Write down what Dr. Carlson said,
“Things that are moving keep moving
things that are stopped stay stopped
unless something pushes or pulls on them.”

5. Toppling Towers
Now can you answer? Why don’t the blocks ABOVE a card move when the card is pulled out? When the string is pulled, only the card feels the pull, not the block. So the block stays still.

6. Watch this MOVING demonstration. There is a coin on top of the car
Watch this MOVING demonstration. There is a coin on top of the car. Watch what happens when a force acts on the car, but not the coin…
click here
Click on the picture to launch video

7. Why did the coin keep moving
Why did the coin keep moving? Turn to your neighbor and see if you can explain.

8. Why should you always wear a seatbelt
Why should you always wear a seatbelt? Turn to another neighbor and explain.

9. Explain this…

10. Explain this…

11. How about a stopping force at 17,000 mph?
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12. We sometimes call Newton’s 1st Law the Law of Inertia
Inertia: things want to keep doing what they were doing
EVERYTHING has inertia

13. See if you can define “inertia” after watching this music video
Click on the box to launch video

14. Write your own definition of inertia in your notebook
Inertia is …… An example of inertia is …..

15. Who is this Newton guy anyway?
Click on the picture to launch the video