Part C 8 of 17 Complete Part B Find vy, the magnitude of the final velocily of t

Question

Part C

8 of 17 Complete Part B Find vy, the magnitude of the final velocily of the two-block system Express your answer numerically View Available Hints) Constants I Periodic Table Block 1, of mass may -1.70 kg, moves along a frictionless air track with speed vi 170 m/s It collides with block 2, of mass m2 19.0 kg, which was initally at rest The blocks stick together after the collision. (Figure t) v1.40 m/s close attention to the two hints in Part B-3 and (i) the second integral in S math course(s) hasn't gotten to integral Correct Parts ate the low Partc What is the change -K-final-Kinitial in the two-block system's kinetic energy due to the collision? Express your answer numerically in joules. View Available Hintís) Figure 1 of 1 Before collision: m2 - -286.564 Previous Answers Request Answe After collision: X incorrect; Try Again 4 attempts remaining

Explanation / Answer

a) pi = 4.3 . 17 = 73.1kgm/s

b) vf = pi / (mi + mii ) = 73.1/ 20.7 = 3.53 m/s

c) KE = (0.5 . 20.7. 3.53^2) – ( 0.5 . 4.3 . 17^2 ) = -492.37 J

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