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Question
A horse and a dog are running with the same speed. If the weight of the horse is ten times that of the dog, What is the ration of their kinetic energies?
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Solution
Kinetic energy of a moving body is directly proportional to its mass. Hence, if the mass of the horse is 10 times the mass of the dog, then,
`"(Kinetic energy)"_"Horse"/"(Kinetic energy)"_"Dog" = 10/1`
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