2D Motion

Honors Physics - Our discussion today ended at with the motion of horizontally-launched projectiles. Remember: initial velocity in the x-direction is constant (a=0), initial velocity in the y-direction is 0, y-direction motion is free-fall, time depends on the y-direction motion and motion in the x- and y-directions is independent. Tomorrow, we examine projectiles launched at angle (initial velocity in both the x- and y-directions) and Wednesday's lab will concentrate on projectile motion. Keep those kinematics formulas from last chapter at the front of the brain and remember to think about vectors and their resolution as we move through this unit.

Physics - today's lab continued work with vectors, specificallty vector resolution - the breaking down of a vector into its x- and y-components. You were able to study acceleration in the vertical direction by looking at the motion of an object in 2 dimensions (cart on inclined plane). This is how we will approach motion that is 2-dimensional when we analyze it more fully tomorrow. Complete the lab tonight (don't forget to make the acceleration vs. sine of ramp angle graph) and we will discuss it in class tomorrow.

Physical Science - Most people scored well on today's exam and are definitely ready to move into our next unit (Motion). We will introduce this unit with a lab centering on the rate of motion (velocity) tomorrow in class and then begin our discussion of concepts that describe motion. If you are still having difficulty with the math concepts, I can give you addition practice problems or out-of-class help, but we do need to move on with the material for the course. There will be many opportunities to practice and demonstrate the basic math skills as we move through the physics topics this year.