# MrFlint.com

The online companion to your favorite class.

- 2-D vector addition basics
- Vectors heads and tails
- Components and resultants
- Trigonometry primer - using the Pythagorean Theorem and sin, cos, tan identities
- Some 1-D and 2-D displacement examples

- You walk 300 m west then walk 458 m at 70° N of E. Determine displacement
- Vector A is 3.0 m east. Vector B is 5.0 m north. Find A+B, B+A, A–B, B–A, –A–B. Compare resultants in terms of commutitive property of addition and how vector sums may be similar or different in magnitude and or/direction.
- You walk 250 m south then walk 400 m east then walk 100 m north. Usefulness of component addition chart.

- P. 74; 9–10 and 12–14 due
- Velocity vector addition basics. Relative motion (You relative to Earth, you relative to Sun, your motion relative to bus if you're walking in bus.)
- Importance of head to tail vector addition method.

- P. 73; 1, 5–8 due
- Velocity vector addition in 2–D.
- Application of vector addition methods in 2–D.
- A bird is flying with a velocity of 25 m/s north. There is a 15 mph wind from the north. Then solve with south wind, west wind, and wind 12° N of E.

- Intro. to Flying in the Wind lab
- Questions about problems?

- P. 76, 35–39 due
- Flying in the Wind lab
- Questions about problems?

- AP Problem set 3 due
- Flying in the Wind lab and problem solving.

- Work on Flying in the Wind Lab

*PSAT Exam - Most of the class is absent*- Work on Flying in the Wind Lab

- Intro. to projectiles
- Examine type 1 projectiles and their motion
- Horizontal monkey gun demonstration
- Study a ball that rolls off a cliff with a speed of 5.0 m/s and falls for 5.0 s.
- Draw velocity vectors at each position and consider the components of each position and velocity vector

- Type 2 projectiles
- Consider the motion of a soccer ball kicked at a 25° angle and an initial speed of 25 m/s

- P. 75, 22-27 due
- Go over problems together

- P. 75, 28-32 due
- Go over problems together

- Intro. to Projectiles Lab
- Collect lab data

- Continue working on Projectiles Lab and AP Problem set 4

- AP Problem Set 4 due
- Go over problems together

- Projectiles Lab Due

- Solutions for chapter 3 supplemental problems today

- Chapter 3 Test

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