Question

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

Answer 1

ME=(mv^2)/2+mgh in this case:

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

ME=40+147

ME=187 J