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Pad 2:40 PM * 83%. webassign.net Home My Assignments Grades Communication Calendar My eBooks Notifications Help My Options Maya Nunez PHYS 1408, section 003, Fall 2017 Instructor: Robert Duncan PHYS 1408, section 003, Fall 2017My Assignments 8 Chapter 9 Momentum (Homework) Current Score:9 17 Due Thursday, October 19 2017 02:00 PM CDT Extension Requests Print Assignment Question 1 234567 8 9 Total -m 3/3-/1 2/2-12-12 1,1 1,1 2/4 9/17(52.9%) Points Description Assignment Submission For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer Collisions Assignment Scoring Your last submission is used for your score 9. 2/4 points | Previous Answers SerPSET9 9.P.034 My Notes Ask Your Teacher Three carts of masses m1 = 6.00 kg, m2 = 9.50 kg, and m3 = 3.00 kg move on a frictionless, horizontal track with speeds of V1- 6.00 m/s to the right, V2-3.00 m/s to the right, and v3 = 5.00 m/s to the left, as shown below. Velcro couplers make the carts stick together after colliding u2 (a) Find the final velocity of the train of three carts magnitude direction right Your response differs from the correct answer by more than 10%. Double check your calculations. m/s (b) Does your answer require that all the carts collide and stick together at the same moment? Yes No What if they collide in a different order? This answer has not been graded yet. Need Help?Read ItExplanation / Answer
a)
Conserving momentum,
m1*v1 + m2*v2 + m3*v3 = (m1 + m2 + m3)*V
So, V = (m1*v1 + m2*v2 + m3*v3)/(m1 + m2 + m3)
= (6*6 + 9.5*3 - 3*5)/(6 + 9.5 + 3)
= 2.68 m/s <------ answer
direction = right
b)
No, it does not require that
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