Further MathematicsDynamicsWAEC
A 3 kg body moving at 4 m/s collides with a 1 kg body at rest and they move off together. Find their common velocity.
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Answer: B. 3 m/s
Momentum: 3 × 4 = (3 + 1)v, so v = 3 m/s.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.