A particle experiences a perfectly elastic collision with a stationary particle. After head on collision, the...

 

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A particle experiences a perfectly elastic collision with a stationary particle. After head on collision, the particles fly apart in opposite directions with equal speeds. The ratio of masses is (A) 1:1 (B) 1:3 (C) 1:2 (D) 4:1 A particle experiences a perfectly elastic collision with a stationary particle. After head on collision, the particles fly apart in opposite directions with equal speeds. The ratio of masses is (A) 1:1 (B) 1:3 (C) 1:2 (D) 4:1