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myrzilka [38]
2 years ago
14

What is the speed of a 48 kg dog running across a lawn with 216 J of energy?

Physics
1 answer:
serious [3.7K]2 years ago
4 0
The speed of dog is 3 m/s!! 
<span>Explanation: </span>
<span>The mass m of the dog is given as 48 kilograms </span>
<span>And Kinetic energy as 216 joules </span>
<span>As we know K.E = (1/2)mv^2 </span>
<span>216 = (1/2) * 48 * v^2 </span>
<span>216 = 24 * v^2 </span>
<span>v^2 = 216 / 24 </span>
<span>v^2 = 9 </span>
<span>v = 3 m/s</span>
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