Work Energy Power

JEE Main level, single correct, medium

113 of 183

Question 113 of 183

A particle moves in one dimension from rest under the influence of a force that varies with the distance traveled by the particle as shown in the figure. The kinetic energy of the particle after it has traveled 3m3m is:

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Answer: (C) 6.5J6.5J


Change in K.E.==Work done==Area
Area=(3×2)+(12×1×1)=6.5=(3\times 2)+(\dfrac{1}{2}\times 1\times 1)=6.5
∴∴ Change in kinetic energy=6.5J=6.5J

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