1. TODAY 1st Half of Class: HW Turn in 5 minutes of Lab check
Knowledge of Kinematics
2nd Half of Class:
Quiz 2

2. Leaving Class Lab will be in my hands next class period
HW Day 11 to be done.

3. But right now 1) HW Turn in: Now for 5 minutes of lab confirmation
Day 5 HW
Day 7 HW
Day 9 HW
Now for 5 minutes of lab confirmation

4. KINEMATICS REVIEW
Relating Motion (Displacement, Velocity [Initial and Final], Acceleration and Time).
We have a 5 step plan for solving these situations.
If you missed the video, better watch ASAP or you will have TROUBLE!

5. The 5 Steps

6. LETS TRY ONE Using the elegance of nature.
A cat jumps up at 2m/s off a 30m tall building.
A) Draw a numberline with all relevant information in the picture.
Vi = +2m/s
At bottom, d = - 30m

7. LETS TRY ONE A cat jumps up at 2m/s off a 30m tall building.
B) How fast was it moving when it hit the ground?
Vi = +2m/s
V = ?

8. LETS TRY ONE A cat jumps up at 2m/s off a 30m tall building.
C) How long did it take to hit?
Vi = +2m/s
t to this point

9. TO THE BOARDS
If the police find skid marks 60 meters long at a crash site (car came to a stop), and know that dry pavement usually allows for acceleration of m/s2, find how fast the car was initially going.
34.64m/s

10. AND NOW
Did the car break the 88km per hour speed limit for Baltimore highways?
YES! The speed limit is 24.4m/s

11. LETS TRY SOME HW