2. Momentum, Impulse, and Collisions A.S. 2.4.1 – 2.4.6 Due Monday, January 12 Quiz covering Momentum, Impulse, and Collisions on Monday, January 12

3. Introductory Examples…  Work with your table group  You will be assigned one of the following of activities: 1. Landing after a ski jump so you do not hurt your knees 2. Catching a water balloon so you do not get wet 3. Catching an egg so you do not get yolk-y 4. Jumping off a lab station without hurting your knees 5. Catching a 90 mph fastball (baseball) without breaking your hand 6. A stunt performer jumping off a three story building without getting hurt  On your whiteboards, explain and illustrate how you would instinctively perform the assigned task. You have 4 minutes. Go!

4. Time Remaining for Activity:  4:00  3:55  3:50  3:45  3:40  3:35  3:30  3:25  3:20

5. Time Remaining for Activity:  3:15  3:10  3:05  3:00  2:55  2:50  2:45  2:40  2:35

6. Time Remaining for Activity:  2:30  2:25  2:20  2:15  2:10  2:05  2:00  1:55  1:50

7. Time Remaining for Activity:  1:45  1:40  1:35  1:30  1:25  1:20  1:15  1:10  1:05

8. Time Remaining for Activity:  1:00  0:55  0:50  0:45  0:40  0:35  0:30  0:25  0:20

9. Time Remaining for Activity:  0:15  0:10  0:09  0:08  0:07  0:06  0:05  0:04  0:03 0:020:01

10. Stop what you’re doing!  Time to share out your creations! One person from each group bring your whiteboard to the front of the room and hold it high!  Are there ANY similarities to the descriptions and/or the illustrations for all the scenarios?

11. Momentum  Used to quantify the motion of a mass  Mathematical definition:  Momentum is equivalent to the product of an object’s mass (in kg) and its velocity (in m·s -1 ).  Momentum IS a vector quantity

12. Fun Facts You Should Remember About MOMENTUM!

13. Whiteboard problem!

14. What is its change in kinetic energy?

15. Impulse

16. Impulse—video demonstrations  For each demonstration shown and discussed, think about the following:  WHAT was causing the change in momentum?  HOW was the applied force changed?