Crey | 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 √2 m/s, (√2-1) m/s, (1/(√2-1)) m/s, (1/√2) 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

Options :

√2 m/s
(√2-1) m/s
(1/(√2-1)) m/s
(1/√2) m/s

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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

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