A running student has half the kinetic energy that his, Physics

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A running student has half the kinetic energy that his

A running student has half the kinetic energy that his younger brother has. The student speeds up by 1.3 m/s, at which point he has the similar kinetic energy as his brother. If the student's mass is twice as large as his brother's mass, what were the original speeds of both the student and his brother?

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