10/26/10

Momentous Tuesday

Physics F conducted a lab investigation that allowed students to examine the effects of velocity and mass on an object's momentum. As predicted by the momentum formula (p = mv), increasing either variable increases momentum and by a predictable amount. Double one and momentum also doubles, etc. The write up for the lab is due on Thursday, because you have more important things to worry about tonight - tomorrow's momentum exam!

Physics B went over their momentum review sheet before conducting a general review of the chapter. Some people took extra problems to work that give you an idea of what types of problems you might see on the test. Starting on Thursday - Work and Energy!

Physics B and F - SOLUTIONS TO EXTRA MOMENTUM PROBLEMS AVAILABLE HERE!!!

Honors Physics built on last week's discussion of work and kinetic energy by adding gravitational potential energy and elastic potential energy to the fix. Both are energies of position and both represent a storehouse of energy available to do work. To get that energy stored up, work had to be done on the object (lifting it to a height, compressing/stretching an elastic material) and you can equate the amount of work done on the object the amount of energy stored. Release that energy, and that is how much the object can do. Tomorrow, we'll go over the lab and use it as an example as we discuss conservation of energy.

Physical Science went over their quizzes and then started work on another set of similar problems. Folks didn't do so well on this quiz, so more practice is indicated and there will be another quiz on the same three problem-solving areas on Friday.

Homework

Honors Physics: 5.1 and 5.2 Section Reviews
Physics B and F: Study for exam. Physics F should complete lab write up by Thursday
Physical Science: Complete Forces Review problems
P

No comments: