The reactants are on the left and the products are on the right of the equation
It looks like they are all units of measurement:
FOOT - POUND - NEWTON - METER
The speed of light in a vac uum is 186,282 miles per second<span> (</span>299,792 kilometers per second<span>), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.
I hope my answer has come to your help. God bless you and have a nice day ahead!
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It is is real because potential energy is stored inside gravitational energy.