По ЗСИ:
p = const = m₁v₁+m₂v₂ = (m₁+m₂)v
v=(m₁v₁+m₂v₂)/(m₁+m₂) = (50*1+40*4)/(50+40) = 2.33 м/с
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Verified answer
По ЗСИ:
p = const = m₁v₁+m₂v₂ = (m₁+m₂)v
v=(m₁v₁+m₂v₂)/(m₁+m₂) = (50*1+40*4)/(50+40) = 2.33 м/с