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

A variable force, given by the 2-dimensional vector `vecF = (3x^(2)hati+4hatj`), acts on a particle. The force is in newton and x is in metre. What is 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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