GKFix MCQ Question

How is the final velocity calculated in a completely inelastic collision?

• A. vf = (m1 - m2)v1i / (m1 + m2)
• B. vf = 2m1v1i / (m1 + m2)
• C. vf = m2v1i / (m1 + m2)
• D. vf = m1v1i / (m1 + m2)