A running man has half the KE that a body of half his mass has. The man speeds up by `1.0ms^(-1)` and then has the same energy as the boy. What were the original speeds of the man and the boy?

A man who is running has half the kinetic energy of a boy of half his mass. The man speeds up by 1 ms^(-1) and then has the same kinetic energy as the boy. The original speeds of the man and the boy was:

A man who is running has half the kinetic energy of a boy of half his mass. The man speeds up by 1 ms^(-1) and then has the same kinetic energy as the boy. The original speed of the boy was:

A man who is running has half the kinetic energy of a boy of half his mass the man speeds up by 1 ms^(-1) and then has the same kinetic energy as the boy the initial speed of the boy is

A running man has half the kinetic energy of that of a boy of half his mass. The man speeds up by one metre per second and then has the same kinetic energy as that of the boy. What are the original speeds of the boy and man?