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A particle which is experiencing a force, given by j 12 i 3 F G G − = → , undergoes a displacement of i 4 d G = → . If particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement ?

1. 9 J
2. 10 J
3. 12 J
4. 15 J

Correct answer: 15 J

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