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I have been sitting in a tram that emergency breake'd. It was all seriously fast: Ring of the warning bell (like an overgrown alarm clock) towards the driver of the car, and next thing was that I was leaning over an old lady sitting in the opposite side. They accellerated like a snail on dope, but breaking was applying ACME Insta Stop.
A lot of trams carry sand that they can put on the rails to get more grip when they need to break really fast. That might be what happened there
Does that cause a lot of damage, either to the rails or the … tram bits?
No, I don't think so. There is cleanup required on the rails of course, but it's used fairly regularly in some places I think when the tracks are wet
https://en.wikipedia.org/wiki/Sandbox_(locomotive)
It is far worse to not use sand, then the wheels will lock up and slide for longer, developing flat spots which will destroy the rails they run on