A father racing his son has half
the kinetic energy of the son, who has...
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Physics
A father racing his son has half the kinetic energy of the son, who has two-fifthsthe mass of the father. The father speeds up by 3.0m/s and then has the same kinetic energy as the son.
(a) What is the original speed of the father? m/s
(b) What is the original speed of the son? m/s
Answer & Explanation
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4.4 Ratings (649 Votes)
First you need the equation of KE which is KE 12 m v2 Call the mass of the father M and assume hes running at speed V The son has speed v Just writing down what you are told at the beginning gives you 212 M
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