Practice question
Question
A 6kg object moves with a velocity of 3i^−2j^m/s. What is the magnitude of the velocity of its center of mass?
Explanation
For a single object, the center of mass velocity equals the object’s velocity. Magnitude = (3)2+(−2)2 = 9+4 = 13≈3.6m/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 3.6 m/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.