11/15/12

Forces and Momentum

Despite being in very different places, all classes are working somehow in the arena of force or momentum.

Physics A and B enjoyed their Chapter 5 exam and Physics B moved after the exam, being long block, to a lab that looked at the impulse-momentum theorem. An object's change of momentum is dependent of the net force acting on the object and the length of time that the force acts. Mathematically: FnetΔt = Δp. We'll finish up the lab tomorrow and A Block will start on it during their long block.

Introductory Physics reviewed their forces and momentum MCAS review work and also engaged in a general review of these topics in preparation for tomorrow's exam. On Monday, we'll start to expand our work on forces by looking at forces in fluids.

Honors Physics reviewed their work with centripetal force and acceleration, then took a look at one specific force that can act as a centripetal force - gravity. We discussed Newton's law of universal gravitation how it can be applied. The link between acceleration due to gravity and gravitational field strength was broached, as was the effect of gravity on orbital motion and the tides. Tomorrow, our heads stay in the heavens as we take on Kepler's laws of planetary motion.