@Woopydalan That's the point. I didn't change the kinetic or potential energy of the ball, but I still spent energy.
@DaleSpam So what you're saying is that when you don't do any work it all just goes to heat?
@afreiden A-ha. So a wall is kind of like a super-stiff spring?
Work is defined as force times displacement. When the force is applied on an object which does not move, or is applied perpendicular to the direction of motion, the work done is zero.
So let's say I hold an object with a mass of 1 kg still in the air for 10 seconds. Because the object does...
Relativity is a truly fascinating and interesting subject that I don't fully understand. I'm currently in the process of studying it and this idea popped up in my head. This is just pure speculation from my side, which I expect to be wrong.
I'll now try to explain the foundation for my...