11/13/08

Force and Energy

Physical Science pondered Newton's 3rd Law of Motion and started ruminating on momentum. Tomorrow, we will discuss the section review questions and you will begin to work a series of problems concerning momentum and impulse. On Monday, you will investigate momentum and its conservation in lab through the study of collisions (settle down, one object bumping another qualifies as a collision - no crunching of metal required). Phyics students discussed the last form of mechanical energy in this chapter - elastic potential. You guys seem to have a good handle on kinetic and gravitational potential, so the addition of this third form to your toolbag should be simple. The lab unit into which we move tomorrow will examine all three and the idea of conservation of mechanical energy. Honors Physics - today's lab permitted insight into energy conservation from the perspective of simple harmonic motion. Groups were able to calculate the spring constant for their spring and demonstrated that an object in SHM exhibit conservation of mechanical energy. Tomorrow, we will go over the lab, tie up loose ends concerning energy conservation and introduce the idea of power. Monday, complete our discussion of power and engage in a general review. Tuesday - exam. YeeHah...

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