Respuesta :

mk2019
The speed of dog is 3 m/s!! 
Explanation: 
The mass m of the dog is given as 48 kilograms 
And Kinetic energy as 216 joules 
As we know K.E = (1/2)mv^2 
216 = (1/2) * 48 * v^2 
216 = 24 * v^2 
v^2 = 216 / 24 
v^2 = 9 
v = 3 m/s

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