PHYSICS

ODMS 3/20 and NFDMS 3/21

"Dropping the ball" The following questions are all related to dropping a pen/pencil from about shoulder high. 1. What happens when you drop the pen/pencil? 2. Does it drop at a constant speed, or is it accelerating? 3. Why does the pen/pencil fall when it is dropped? 4. Is there any way to make the pen/pencil fall faster when it is __dropped__? (If yes, how? If no, why?) 5. What forces are acting on the pen/pencil as it is dropped? (List more than one)

"What goes up, must come down" The following questions are all related to tossing a pen/pencil up in the air 3-4 feet 6. When you throw a pen/pencil up in the air, what happens? 7. What makes it go up? 8. Why does it stop and come back down? 9. Once the pen/pencil goes up and then stops, how does its motion differ from "dropping the ball"? 10. Does gravity pull the pen/pencil down, or push it down? Why do you say that?