Here are the screen shots for this week . . . Will add more captions as I get time.

PhySPSS4.4.1a A clean room finally. Thanks to these brilliant young men.

PhySPSS4.4.1b They took all the chairs and tables to the hallway, then wiped them all down as well.

PhySP18SS4.4.1c Inertia is resistance. This screen shot gives a little history to inertia and momentum.

PhySP18SS4.4.2 Type 1. Basically, all projectile motion is free fall on a conveyor belt.

PhySP18SS4.4.3 How an object falls: 1-3-5-7-9-….

PhySP18SS4.4.4 All type 1 with different initial velocities

PhySP18SS4.4.5 This is the basic way that any type 1 Proj Mot set of graphs will look.

PhySP18SS4.4.6: A Land-Air type 1 Proj Mot. Remember, the final velocity of the object on land is the intial velocity of the object in the air.

PhySP18SS4.4.7 We call that a Bridge Equation because it links the two parts of the problems togather.

PhySP18SS4.4.8 Gravity acts only on the center of mass (also called center of gravity) of any object.

PhySP18SS4.4.9 The center of mass of the system makes a perfect parabola.

PhySP18SS4.4.10 . . .

PhySP18SS4.4.11 Type 2A

PhySP18SS4.4.12 Type 2A

PhySP18SS4.4.13 This is the basic shape of the Duet/Trio that goes with Type 2A Proj Mot.

PhySP18SS4.4.14: DANGER! DANGER! DANGER! The Range Equation is convenient when you don’t know time, but can ONLY be used in type 2A Proj. Mot. problems

PhySP18SS4.4.15 Finishing up the Range Equation

PhySP18SS4.4.17

PhySP18SS4.4.18 The three types of Proj Mot.

PhySP18SS4.4.20 Type 2B

PhySP18SS4.4.21 Type 2B

PhySP18SS4.4.22 Type 2B . . . also notice the center of mass OF THE SYSTEM is in a perfect parabola.

PhySP18SS4.4.19 This is what the five graphs look like for Type 2B

PhySP18SS4.4.23 Type 2B

PhySP18SS4.4.24

PhySP18SS4.4.25

PhySP18SS4.4.26 Sometimes you will find that you get two positive times from the Blue Quad. One of the times is on the way up and one of the times is on the way down.

PhySP18SS4.4.27 See? the minus root gives you the time when the object is on the way up and the plus gives you the time when the object is on the way down.

PhySP18SS4.4.28 One of the top ten hardest problems of the year.

PhySP18SS4.4.29 . . .

PhySP18SS4.4.30 Be careful on angles in the 4th quadrant. They are negative reference angles.

PhySP18SS4.4.31

PhySP18SS4.4.32 My new rules for football.

PhySP18SS4.4.33 4.10

PhySP18SS4.4.34b Proj Launch!

PhySP18SS4.4.34c Proj Launch!

PhySP18SS4.4.34 4.10.4

PhySP18SS4.4.35

PhySP18SS4.4.36 When we were determining the V naught for the projectile motion launcher.

PhySP18SS4.4.37 The two types of launches we did.

PhySP18SS4.4.38 The crazy equation we used to determine our ∆x in our hallway activity.

PhySP18SS4.4.39 . . .

PhySP18SS4.4.40 . . .

PhySP18SS4.4.41 Graph from our hallway activity (4.11)