Solutions to Assigned Problems, Unit 2, Chapter 4 MOTION WITH A CHANGING VELOCITY
1. (a) Strategy Relate the acceleration, speed, and distance using Eq. (4-5). Solution
v 2 v 2 0 (3.2 m s)2 2 vfx vi2 = 2ax x, so ax = fx ix = = 0.85 m s 2 . x 2x 2
Solutions to Assigned Problems, Unit 2, Chapter 5 CIRCULAR MOTION
1. Strategy Find the arc length swept out by the carnival swing. Solution Use Eq. (5-4). 2 rad s = r = (8.0 m)(120) = 17 m 360 5. Strategy Use Eq. (5-9) to find the angular speed
Solutions to Assigned Problems, Unit 3, Chapter 6 CONSERVATION OF ENERGY
1. Strategy Use Eq. (6-1). Solution Find the work done by Denise dragging her basket of laundry.
W = F r cos = (30.0 N)(5.0 m) cos 60.0 = 75 J
30.0 N 60.0 5.0 m x
5. Strategy
Lab 3 Analysis (This replaces section III in pp. 3-10 through 3-13 of the Study Guide.) III. Analysis A. Elastic collision, equal masses 1. Draw a line connecting the landing points of the projectile and target for each of your collisions. Ideally th