Phew, it’s long ago since I’ve studied this stuff…
Time-place-system (t,x,y,z), conservation and kinetical energy is written on the board (nice clue), the line below looks like Lorenz transformation,… Basic physics.
In college, though an English major, I had to take a science course. I took Physics for dummies. That wasn’t the name of it but that was essential the course, one for liberal arts students. I know nothing about physics even after one semester.