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A 0.4-kg particle has a speed of 2m/s at point A and kinetic energy of 8J at point B. What is the net work done

A 0.4-kg particle has a speed of 2m/s at point A and kinetic energy of 8J at point B. What is the net work done on the particle by external forces as it moves from A to B?

a. 7.2 J

b. 0

c. 8.8 J

d. 6 J

e. 12.8 J

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