NEET Physics Centre of Mass MCQ Question
Two masses m1 and m2 are moving towards each other with velocities v1i and v2i, respectively. After an elastic collision, their velocities are v1f and v2f. If m1 = 2 kg, m2 = 3 kg, v1i = 5 m/s, and v2i = -4 m/s, what is the final velocity v1f of mass m1?
2 m/s
1 m/s
-1 m/s
-2 m/s
Correct Answer
Detailed Explanation
Using the momentum conservation equation m1v1i + m2v2i = m1v1f + m2v2f and the relative velocity equation v1i - v2i = -(v1f - v2f), we can solve for v1f. The calculations show that v1f = 1 m/s.
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