1 answer
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before
North (y) momentum =2300(14) - 1600 (16) cos(270-225)
= 32,200 - 18,101 = 14,098 kg m/s
East(x) momentum = 0 =18,101 = -18,101
after
same momentum, but mass is 2300+1600 = 3900 kg
East (x) = 3900 * Vx = -18,101
North (y) = 3900*Vy = 14,098
so Vx = -4.64 m/s
Vy = 3.61 m/s