Three Masses Are Moving Along the X-Axis

question 39

Multiple Choice

Three masses are moving along the x-axis.Their masses and velocities are ​m​₁ = ​m​ with ​v_​1 = ​v​,​m_​2 = 2​m with v₂ = 2v,and m₃ = 3m with v₃ = -3v ​(the minus sign indicating this velocity is in the negative x-direction) .The three masses collide and stick together in a completely inelastic collision.What is the resultant velocity of the combined mass?

• A)0,since their combined momentum is zero.
• B)-2v/3
• C)14v/3
• D)-v

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