Damon is question 2,:
5*10^4 x 2.5= 125000kgm/s
then 4*10^4x 0= 0
so momentum before = 125000
so v=p/m
so 125000/5*10^4 divided by 4*10^4 which is 1.38recurring ms-1
so is the initial velocity of the coupled carriages after the impact 1.38recurring ms-1??? sorry i cant do a recurring sign
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Sorry i meant this is what i think of question 3 for question 2 b i got so stuck please help
i am also completely baffled byquestion 4 too
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