Lab sheet for class activities to be used in conjunction with slide show presentation FORCE AND MOTION.

2. The ball will roll down the ramp and cause the cup to move.

4. Rolled a greater distance than the ball with less mass (glass marble).

5. The force here was gravity. Gravity caused the balls to roll down the ramp.

6. Which ball exerted more force?

7. the steel ball (more mass_

9. The ball will roll down the ramp and cause the cup to move.

10. Measure the distance the cup moved from the bottom of the PVC pipe to the front rim of the cup.

11. Repeat steps 2 and 4 two more times.

12. Place the manila paper under the cup with the end of the paper touching the bottom end of the PVC pip

13. Repeat steps 2-4 three times.

14. Place the felt under the cup the same way as you placed the manila paper in step 6.

16. _______________________________

17. _______________________________

18. Which surface should have the most friction?________________________

19. Which surface should have the least friction? ________________________

20. On which surface did the cup move the farthest distance?

21. ______________________________

22. On which surface did the cup move the shortest distance?_____________________________

23. Discuss your results in terms of how the roughness of a surface affects how much force is necessary to move an object.