Q The only force F acting on a 2 kg body moves along x-axis varies as shown in the figure. The velocity of the body along positive x-axis at x=0 is 4m/s. The kinetic energy of the body at x=3 m is:-
1) 4 J 
2)8 J                                   
3)12 J
4)16 J

Dear Student,

work done by force F in 3 sec =-4J   from the area under the curve .initial KE=2*162=16 J final KE=16J-4J=12Joption 3 regards

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