A father racing his son has two-fifths the kinetic energy


A father racing his son has two-fifths the kinetic energy of the son, who has half the mass of the father. The father speeds up by 2.0 m/s and then has the same kinetic energy as the son.

(a) Find what is the original speed of the father?

(b) Find what is the original speed of the son?

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Physics: A father racing his son has two-fifths the kinetic energy
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