A body of mass \( 10 \mathrm{~kg} \) at rest is acted upon simultaneously by two forces \( 4 \ma...

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A body of mass \( 10 \mathrm{~kg} \) at rest is acted upon simultaneously by two forces \( 4 \mathrm{~N} \) and \( 3 \mathrm{~N} \) at right angles to each other. The kinetic energy of the body at the end of \( 10 \mathrm{sec} \) is
[Kerala (Engg.) 2001]
(a) \( 100 \mathrm{~J} \)
(b) \( 300 \mathrm{~J} \)
(c) \( 50 \mathrm{~J} \)
(d) \( 125 \mathrm{~J} \)
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