Recent content by Nokx

I believe it goes like this. Spacetime has four dimensions that include time, and when one object is moving at a nonzero speed relative to the observer, then the dimensions get shifted, sort of like turning the axis on a coordinate system, so that time and distance progresses differently for the...

Think of it this way. Say these two pieces were already at infinitely far away. To get one piece to a certain distance d to the other, work of the magnitude q^2k/d has to be done on that one particle. The same amount of work is needed to move the first piece near the second. Therefore the total...

The calculation would change, because you would have to find the final velocities such that you not only conserve momentum but also kinetic energy (KE=mv^2/2). Also, force varies over time in any collision. Using Ft=mv will give you an average force during the duration t of the collision the...

Hi. I'm a high school student and I hope to have a good time in both learning and discussing different concepts about physics on the forum.