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A particle P moving with speed v undergoes a head -on elastic collision with another particle Q of identical mass but at rest. After the collision

(a) Both P and Q move forward with speed v/2

(b) Both P and Q move forward with speed v/√2

(c) P comes to rest and Q moves forward with speed v

(d) P and Q move in opposite directions with speed v√2

Answer : c

(8)

5/5 - (2 votes)

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