A block of mass \( 2 \mathrm{~kg} \) is free to move along the \( x \)-axis. It is at rest and f...

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A block of mass \( 2 \mathrm{~kg} \) is free to move along the \( x \)-axis. It is at rest and from \( t=0 \) onwards, it is subjected to a time-dependent force \( F(t) \) in the \( x \)-direction. The force \( F(t) \) varies with \( t \) as shown in the figure. The kinetic energy of the block after \( 4.5 \mathrm{~s} \) is
img src=https://penpencil-static-content.s3.ap-south-1.amazonaws.com/5eb393ee95fab7468a79d189/2u00q10sj26tdqq5szo7xt6ye.png /
(1) \( 4.50 \mathrm{~J} \)
(2) \( 7.50 \mathrm{~J} \)
(3) \( 5.06 \mathrm{~J} \)
(4) \( 14.06 \mathrm{~J} \)
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