FRQ info post...

won't be able to get a video up, but allow me to guide your studying for the FRQ portion tomorrow.

1.  like i said in class - first FRQ will be an inclined plane problem, but needs to be solved using work-energy.  think about the energy transformation as an object travels down the plane.  whatever energy an object start with must be what it ends with, even if that initial gravitational potential energy changes form.  and...if thermal energy is created, the work done by friction created it.  in essence...

 Wfric = change in Etherm             Ffric x d = Etherm (solve for Ffric?)

2.  the second FRQ involves a conservation of momentum question, and types of collisions will come into play.  what makes elastic collisions what they are?  how can you tell what type of a collision you have, if all you have is mass and initial and final velocities?

3.  the final FRQ is about circular motion.  specifically, period, frequency, tangential velocity, centripetal acceleration, centripetal force, and what force might act as centripetal force.  i'd have your centripetal force worksheet handy, as well as your circular motion packet.  also, better have your vectors taken care of for tangential velocity and centripetal acceleration.

by the way, MC tests are graded.  no, i don't have your grade by me.  you can ask about them tomorrow morning, although i think it'd be easier on your sanity if you waited until AFTER the FRQ test.  equation tests aren't done yet, either...and they won't be until during 5th period.  expect to see some slight changes to your grade as i enter in your collision definitions, winter break assignment, and rotating surface bellringer sometime tomorrow or thursday.

happy studying/compiling!