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A variable force, given by the 2-dimensi...

A variable force, given by the 2-dimensional vector `vec(F)=(3x^(2)hat(i)+4hat(j))`, acts on particle. The force is in newton and x is in metre. What isd the change in the kinetic energy of the particle as it moves from the point with coordinates (2,3) to (3,0) ? (The coordinates are in metres)

A

`-7 J`

B

Zero

C

`+7 J`

D

`+19 J`

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The correct Answer is:
C
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