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26-01-2022
Physics

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A birdie with a mass of 0.005 kg is served at a speed of 90 m/s (This is over 200 mph!). Determine its kinetic energy. A) 0.001125 J. B) 0.45 J. C) 20.25 J. D) 40.5 J

Respuesta :

26-01-2022

Answer: C. 20.25J

Explanation: KE = 1/2 m v^2

m= .005, v= 90

1/2 * .005 * 90^2 = 20.25J

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