Two objects slide over a smooth horizontal surface. The first object has a mass of 5 kg, and is moving with the horizont

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Two Objects Slide Over A Smooth Horizontal Surface The First Object Has A Mass Of 5 Kg And Is Moving With The Horizont 1 (130.2 KiB) Viewed 42 times

Two objects slide over a smooth horizontal surface. The first object has a mass of 5 kg, and is moving with the horizontal speed of 4.5 m/s toward the second object, mass of mass 2.5 kg, which is initially at rest. After the collision, both objects have velocities which are directed at 30 degrees on either side of the original line of motion of the first object. Draw the before-after collision vector diagram that is needed to solve this problem in order to determine the two objects' velocities after collision. This is the rubric Minimize File Preview ZOOM + HW-Collision Diagram Proficient (3 points) Intermediate (2 pts) Developing (1 pt) Inadequate (Opts.) Completeness (w=2.5) All the following vectors are clearly 1 of the vectors indicated in 2 of the vectors indicated in 3 or more of the indicated on the diagram (including any the Proficient Column are the Proficient Column are vectors indicated in the zero vectors): missing missing Proficient Column are (1) Velocities and their OR OR missing components before collision The x and y axes are NOT The x and y axes are NOT (the x and y axes are (2) Velocities and their 2 clearly labeled and marked for clearly labeled and marked might or might not be components after collision the system before or after for the system before and labeled and marked for The x and y axes are clearly labeled and collision after collision the system before marked for the system before and after and/or after collision) collision Correctness (w=2.5) All vectors shown in the Completeness 1 of the vectors indicated in 2 of the vectors indicated in 3 or more of the Proficient Column are drawn correctly. the Proficient Column is the Proficient Column are vectors indicated in the All angled velocities are resolved missing/drawn incorrectly missing/drawn incorrectly Proficient Column are correctly OR (this could include missing/drawn 1 of the angled velocities is incorrectly resolved initial incorrectly (this could resolved incorrectly velocity vectors) include incorrectly resolved velocity vectors) Notation and Symbols All symbols used are standard symbols 1 of the required symbols is 2 of the required symbols 3 or more of the (w=2) with correct indices. The angle of missing/incorrect are missing/incorrect symbols used are inclination for all angled velocities is OR OR incorrect (regardless clearly marked and labeled. 1 of the angles of inclination The angles of inclination for the marking and The x and y components of all resolved for the angled velocities are the angled velocities are not labeling of angles of vectors are clearly and correctly not clearly marked and clearly marked and labeled. inclination and/or labeled. . labeled. OR vector components) The x and y components of all resolved vectors are incorrectly labeled. Positive Direction (w=1) The positive chosen direction is clearly The positive chosen directions Only one positive chosen There is no indication indicated with an arrow and a + sign at are indicated for both x and y, direction is clearly indicated of a positive chosen the end of the arrow for both the x and but one or both are not clearly with arrow and a + sign at direction for either the the y directions. shown as an arrow and a + the end of the arrow(for the x or the y direction. sign at the end of the arrow. x or the y direction) Grading rubric explanation: each evaluative category (row) is scored on a 3-2-1 basis. Each category is weighted ( w, shown next to the category descriptor). The total number of points possible per row is then 3 x W, (i.e. 7.5pts are possible for row 1). There are 4 total rows, and 24 total points possible. A MINIMUM of 5 points will be deducted if the diagram is NOT presented in the BEFORE/AFTER required format