HW__2_F05[1]

# HW__2_F05[1] - Physics 112 Read Homework#2 Fall 2005...

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Physics 112 Homework #2 Fall 2005 Read: Chapter 1, sections 1.8 - 1.10 (through Example 1.11 on page 27) Chapter 3, section 3.5 Chapter 2 (all) For discussion: Chap. 1: Q's #Q1.21; E's & P's #1.35, 1.43, 1.86 [answer: 109.5°] (not turned in) Chap. 2: Q's #Q2.3, Q2.4, Q2.6, Q2.10, Q2.11, Q2.12, Q2.15, Q2.16, Q2.20 E's & P's #2.5, 2.19, 2.31, 2.32, 2.39, 2.41, 2.51, 2.53, 2.65, 2.79 Chap. 3: Q's #Q3.14, Q3.16; E's & P's #3.37, 3.39, 3.43 Due Friday, Sept. 9 at lecture: #2.23 [Acceleration & the Human Body] #2.82 [Model Rocket, In (a): Graph a y & v y ] #2.88 [Free Fall with Sound] #1.47 & #1.51 [Vector Components] #3.81 [Relative Velocity/Reference Frames] For both parts, (a) and (b), please include carefully drawn and labeled velocity vector diagrams showing how the airplane's velocity relative to the ground is related to its velocity relative to the air. #3.93 [Relative Velocity/Reference Frames] HINTS: Start by working part (a) in the reference frame of the river. For part (b), switch to the reference frame of the ground. 1. [Velocity & Acceleration Vectors] Two carts roll towards each other on a level table. The vectors represent the velocities of the carts before and after they collide. A B A B Before After (a) Draw and label a vector for each cart to represent the change in velocity from before to after the collision.

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