Q&A time
Will my toast be cooler if dropped on the ground?
Bread is already a source of energy (food),
It was put into the toaster and got heated up,
Now the bread became a toast. It went from a static source of energy to a vibrant one, because it got hotter (some energy got transfered to it).
I take the toast out and it slips off my hands. As it hits the floor, does the toast lose energy that it already had or does it lose energy that it generated with the kinetic energy of gravity? In this case, Is the gravity caused by mass a source of energy or not? I wonder...
Ps: eating your toast while they are still hot is better for you because you are consuming more energy.