- Plastic Cups x 2
- Ruler - Center Groove
Note: Ruler may be wood or plastic
Newton's 2nd Law of Motion
Place one end of the ruler on an incline (book)
Rest the other end in a paper cup that you have cut a notch out of
Roll a marble down the middle of the ruler
- note the distance the cup moves.
Now, add a book to make the incline steeper and repeat...
Adapted from: Science Project Ideas for Kids
Janice VanCleave's Play and Learn About Science