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

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

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

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!

The 5 Steps

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

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 = ?

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

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 -10m/s2, find how fast the car was initially going. 34.64m/s

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

LETS TRY SOME HW