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3.A running man has half the kinetic energy of that of a boy ofhalf of his mass. The man speeds up by 1m/s so as to havesame K.E. as that of the boy. The original speed of the manwill be[Pb. PMT 2001](a) /2m/s(b) (2-1)m/s62. 1m/s(d) m/s(V2-1)V2 |
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