Question

A running man has half the kinetic energy of a boy of half his mass. The man speeds up by and then has the same kinetic energy as the boy. The original speed of the boy was

Answer 1

Answer:The kinetic energy of a man is half that of a boy

A man who is running has half the kinetic energy of the boy of half his mass. The man speeds up by1m/s and then has the same kinetic energy as the boy

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