Two particles of masses 1 kg and 2 kg are moving with velocities 2 m/s and 3 m/s respectively. What will be the velocity of the combined mass if they stick together after collision?
Correct: A
Using the law of conservation of momentum: m1v1 + m2v2 = (m1 + m2)v. Given, m1 = 1 kg, v1 = 2 m/s, m2 = 2 kg, v2 = 3 m/s. Substituting these values gives: 1 × 2 + 2 × 3 = (1 + 2)v. This simplifies to 8 = 3v, so v = 8/3 = 2.67 m/s.