Part A: Find the net momentum of system A. Assume that v1 = 5.0m/s and v2 = 7.2m

Question

Part A: Find the net momentum of system A. Assume that v1 = 5.0m/s and v2 = 7.2m/s .

Part B: Find the net momentum of system B. Assume that v1 = 2.0m/s and v2 = 5.0m/s .

Part C: Find the net momentum of system C. Assume that v1 = 5.0m/s and v2 = 7.2m/s

Part D: Find the net momentum of system D. Assume that v1 = 2.0m/s , v2 = 6.6m/s , and v3 = 8.4m/s .

For each case in the figure below, the system consists of the masses shown with the indicated velocities. Part A: Find the net momentum of system A. Assume that v1 = 5.0m/s and v2 = 7.2m/s . Part B: Find the net momentum of system B. Assume that v1 = 2.0m/s and v2 = 5.0m/s . Part C: Find the net momentum of system C. Assume that v1 = 5.0m/s and v2 = 7.2m/s Part D: Find the net momentum of system D. Assume that v1 = 2.0m/s , v2 = 6.6m/s , and v3 = 8.4m/s .

Explanation / Answer

Part A
Net momentum = m1v1 + m2v2
   = 5*5 + 3*7.2
= 46.6 kgm/s

Part B
Net momentum = m1v1 + m2v2
= 6*2 + 3*(-5)
=-3 kgm/s

Part C
Net momentum = m1v1 + m1v1
= 9*5 + 6*(-7.2)
   = 1.8 kgm/s

Part D
Net momentum = m1v1 + m2v2 + m3v3
= 7*2 + 8*(-6.6) + 4*(8.4)
   = -5.2 kgm/s

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