A running man has half the kinetic energy of that of a boy of half of...

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A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by 1 m/s so as to have same K.E. as that of boy. The original speed of the man will be (a) √2 m/s 1 '(√2-1)" (c) m/s (b)(√2-1) m/s 1 √₂¹ (d) m/s A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by 1 m/s so as to have same K.E. as that of boy. The original speed of the man will be (a) √2 m/s 1 '(√2-1)" (c) m/s (b)(√2-1) m/s 1 √₂¹ (d) m/s