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प्रश्न
Find the kinetic energy of a body of mass 5 kg moving with a uniform velocity of 10 m s-1.
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उत्तर
Mass of body m = 5 kg
velocity v = 10 ms-1
K.E = `1/2mv^2`
= `1/2 xx 5 xx 10 xx 10`
= 250 J
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