*See the HiHW grading rubric posted on Carmen* Name: Recitation Instructor: Diedre rides her sled down an icy, frictionless hill. When Representation: 0 1 2 she reaches level ground at the bottom, she is traveling at Physics Concept(s): 0 1 2 vi = 4.0m/s and has a glancing collision with her sledding Initial Equation(s): 0 0.5 1 buddy Brynn, who is initially at rest. Both sledders have the same mass, and they are using identical sleds. The colli- Symbolic Answer: 0 sion causes Diedre's velocity vector to deflect by an angle of Units Check: 0 0.5 1 0 = 210, and the velocity vectors of both sledders are perpen- Limits Check: 0 0.5 1 dicular to each other after the collision. What is Brynn's speed Neatness: 2 -1 0 v2 after the collision? For the limits check, investigate what Total: happens to Brynn's speed v2 as Diedre's initial speed vi - 0. Correct Answer: Y N Representation Physics Concept(s) (Refer to the list posted on Carmen) Initial Equations 1) (2)lAlgebra Work (Symbols only. Don't plug in any numbers yet.) Symbolic Answer: Units Check Limits Check a) As U\" > 0, What limit does v2 approach? b) Why does the result make physical sense? Numerical Answer: (Obtain this by plugging numbers into your symbolic answer.)