Physics 122 Impluse and Momentum in 1D! - again! Tomorrow: Collisions in 2D! Physics 112 Laboratory period (Lenses, Refraction, Lenses Virtual Lab) Astronomy 120 Quick overview of asteroids and coments. Started chapter 10 on the Sun. Math 9 Similar Triangles (Chapter 7.4). Read chapter 7.4 and do question 4 on page 349.