Question 1024973
Kinetic energy is given in units of energy typically watts in English units or Joules in SI units.
Ft-lbs are definitely not the correct unit. 
I like SI because it's more logical so converting,
{{{m=395000/2.2=179545}}}{{{kg}}}
{{{v=500*(1.6/1)*(1000/1)*(1/3600)}}}{{{cross(mi)/cross(hr)}}}{{{cross(km)/cross(mi)}}}{{{m/cross(km)}}}{{{cross(hr)/s}}}
{{{v=222}}}{{{m/s}}}
So then,
{{{KE=(1/2)mv^2=(1/2)(179545)(222)^2=4.43x10^9}}}{{{J}}}
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Word of warning, don't use online calculators for simple calculations.
They might not yield the correct answer.