A 200,000 kg train moving at 3m/s hits a initally still train that is 600,000 kg...
A 200,000 kg train moving at 3m/s hits a initally still train that is 600,000 kg , they link t ogeatjer and keep moving, how fast are they moving afterward
Homework Answers
By conservation of momentum we have
m1u1+m2u2=m1v1+m2v2
20020*3=(600000+20020)v
v=0.096 m/sec
they moving afterward with 0.096 m/sec
no external forces act
so,momentum will conserv
initial momentum=final momentum
initiam momentum=200000*3=600000kg.m/s
final momentum=(200000+600000)*V
initial momentum=final momentum
600000=800000*V
V=6/8=3/4=0.75m/sec
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