A 1400 kg automobile, heading north at 45 km/h, collides inelastically with a 2500 kg truck traveling east at 33 km/h. What is the vehicles' final velocity?
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Explanation:
From conservation of momentum
Initial momentum = final momentum
mu+MU=(m+M) V
1500×25 i^+2500×20 j^ =(1500+2500) V
V=9.375 i^ +12.5 j^
Final velocity when they stick together is 9.375i^+12.5 j^
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