12-04-2017
Mathematics

contestada

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

Respuesta :

12-04-2017

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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