The momentum of the car train system immediately before a collision would be

a) 5.69 x 10^5kg x m/s, 7.36 north of east

b) 5.69 x 10^5kg x m/s, 82.6 north of east

c) 6.40 x 10^5kg x m/s , 7.36 north of east

d) 6.40 x 10^5 kg x m/s, 82.6 north of east

Train locomotive Train track m = 4.7 x 10 kg V- 12.0 m's N W Car 171 = 2.7 x 10 kg 1 = 27.0 ms