Starting with equations 1 + mv2 cos 02 and 0= mv sin 0 + m2 u2 sin

Starting with equations

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1 + m₂v2 cos 02 and 0= m₁v₁ sin 0₁ + m2 u2 sin 02 for conservation of momentum in the x- and y-directions and assuming that one object is originally stationary, prove that for an elastic collision of two objects of equal masses, 2 mv₁²: = 2 mu₁²+ mv'2² +mu'v'2 cos (01-02) as discussed in the text.