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22 December, 05:37

An object has a mass of 5.0 kg. It's 3.0 m off the ground and has a speed of 4 m/s. Calculate total mechanical energy of the object. Remember Mechanical energy is the sum of KE and PE

A. 147

B. 187

C. 60

D. 167

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Answers (1)
  1. 22 December, 09:30
    0
    ME = (mv^2) / 2+mgh in this case:

    ME = (5*4^2) / 2+5*9.8*3

    ME=40+147

    ME=187 J
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