Physics A and B reviewed for their Work and Energy exam. I had a request, and it was a good one, for a video centering on power and how to choose the right formula/relationship to solve problems. So, here's that video and remember that there were a couple of posted earlier on calculating individual forms of energy and solving problems using conservation of energy:
Introductory Physics reviewed their momentum quiz before moving on to some MCAS review for forces and momentum. We'll use these questions/problems as part of tomorrow's review for Friday's exam, so do your best with them!
Honors Physics began a unit for circular motion. We discussed how the speed of circulation motion can be described and contrasted angular and tangential velocity. If velocity changes, that means acceleration and we discussed three accelerations associated with circular motion, two which report rate of change of the speed portion of velocity (angular and tangential acceleration) and the other that reports the rate of change of the direction part of velocity (centripetal acceleration). Tangential and angular acceleration are in the direction of the velocity in of the motion, but centripetal is always pointed towards the center of the circular path. Centripetal acceleration is produced by centripetal force, which is a job description not the name of one specific force. We looked at examples where tension, gravity, friction and the normal force can all act as a centripetal force, so look for all of those to possibly show up in problem solving. Tomorrow, we'll keep going with circular motion by looking at one specific force that can act as a centripetal force - gravity.
