KarolanG KarolanG

30-03-2016
Physics

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an eagle has a mass of 8 kg and is flying 85 m above the ground with a speed of 20 m/s. what is the total mechanical energy of the eagle?

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olemakpadu olemakpadu

30-03-2016

Total Mechanical Energy = KE + PE

KE = (1/2)mv²

= (1/2)*8*20² = 1600 J

PE = mgh g ≈ 10 m/s²

= 8 * 10 * 85 = 6800J

Total Mechanical = 1600 + 6800 = 8400 J.

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