Smacking young kids if they were noisy or fidgety at meetings was a normal thing at my KH. If that didn't work, then it was the typical 'grab the kid and haul them to the back, or outside, in front of everyone, to give them a good walloping'. You could often hear the smacks or the howls of the assaulted child. I don't know if that falls under "physical abuse" for you, but it does for me, given it wasn't for really good or serious reasons. Even then, it'd be abuse. It's unreasonable to expect young kids, 2 or 3 years old, sometimes younger, to sit like good little JWbots in their seat for the whole meeting.
It went far beyond just one smack on the butt, which I'm okay with on the rare occasion when nothing else works and it's a really serious matter. Bruises were the norm and it was inflicted on older kids too. I remember parents talking quite proudly about their disciplining their kids this way to each other. It made them look good in the eyes of the KH. I often skipped P.E. because I didn't want the bruises on my arms and legs visible to my classmates. This was back in the day when you didn't report this kind of thing - 70s.
When I was about 19, I couldn't maintain the pretense anymore, having woken up at least 4 years earlier and loathing every minute of the JW existence forced on me, the advice my mother got from an elder's wife, as to "what to do about my spiritual weakness", was: Beat her. This from an elder's wife. Note the word "beat". No shame in it either. I don't know about today. I hope it's not as bad.
And the emotional abuse, well, like others here have said, that's part and parcel of the cult.