question_answer

The force \[\overset{\to }{\mathop{F}}\,=F\hat{i}\] on a particle of mass 2 kg, moving along the x-axis is given in the figure as a function of its position x. The particle is moving with a velocity of 5 m/s along the x-axis at x = 0. What is the kinetic energy of the particle at \[x=8m?\] [JEE ONLINE 26-05-2012]

A) 34 J

B) 34.5 J

C) 4.5 J

D) 29.4 J