Q56 of 146 Page 147

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 ratio of their kinetic energies?

As we know,

K.E∝ mass,


Ratio of KE = K.E of horse/K.E of dog


= 10/1


=10


Hence, the ratio of their kinetic energies is 10:1


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