3) 2.608 m/s
apply momentum conservation
m1 x u1 +m2 x u2 = m1 x v1 + m2 x v2
1750 x 1.5 + 1450 x 1.1 = 1750 x 0.25 + 1450 x v2
v2= 2.608 m/s
Question 3, thanks ! the mass move when no longer in o 3. A 1750 kg...
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Question 4 please, thanks !
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