The hammer of a pile driver has a mass of 3000 kg. It falls through a height of 9 m. The hammer's kinetic energy just before impact is: A. 27.0 kJ B. 264.87 kJ C. 27,000 kJ D. 243,000 J E. None of the above
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The potential energy of an object is given by the equation PE = mgh, where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height. PE = (3000 kg)(9.8 m/s^2)(9 m) PE = 264,600 J Show more…
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