A-LevelPhysicsDynamics9702/12 · Feb/Mar 2022 · Q101 Mark
A rock of mass 2m, travelling in deep space at velocity v, explodes into two parts of equal mass, one of which is then stationary. What is the kinetic energy of the moving part after the explosion?
A¹/₂ mv²
Bmv²
C³/₂ mv²
D2mv²
✓ Correct answer
D: 2mv²
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