probably somewhere between 10-25mph, no idea what that is in kph, but
given how long it would likely take to get up to speed and how long it could most likely sustain it, unlikely to be built for a chase.
But think: its prey is - at best - on the same transmission system. Duckbilled dinosaurs aren't going to whizz about and do a Charles Johnson when they see the tyrannosaur coming, and especially not them, since they're not even ornithiscians. Lizard-hipped means slow going. T. rex's locomotion was probably more than adequate to get after one of them. As I recall, ceratopsians for example are reckoned to be much slower. If everyone else is driving Mazdas...the Topaz is king.
Agreed, although comparison with birds doesn't work, they use talons to catch prey(effectively hind legs if you're comparing it to a ground creature),
Not necessarily - the large flightless killer birds of about 10 MYA (the "terror birds") probably used their bite and talons both. And T. Rex had a balancing tail to flick. I'll bet they could have been a bit more creative if they had to.
.Some people reach for silly things to justify their claims. You'll have to explain to me how they calculated 'carcass abundance' in the first place, though you did say they estimated so they probably just made it up.
They worked it out against the Serengeti and the 40,000,000 kg of ungulates that apparently die there each year. Can't post the PDF unfortunately; but this is a big, big assumption.
http://www.journals.royalsoc.ac.uk/content/656v56hlp46nqk4w/That's rather embarrassing for them. Have you got a link for the study by the way I'd be interested in reading it?
Unfortunately I can't post the PDF, but they explicitly talk about reptilian activity schedules and allometric energy relationships from page 731 (the first page) onward. They did mention the mammalian model in the article (avian would have been the correct one) but then essentially said that increased average moving costs would have been offset by more inactive time between kills, which is kind of cheating, really. Why aren't the reptilian-model T.rexes then also resting more between kills? No idea. Silly.
I'm not sure, I'm not so familiar with them, I know they're pack hunters but are they not also known to scavenge? Or be descended from scavengers of a harsher climate? It's quite a useful trait to have really.
I agree, naturally - it's just that wolves (even though they're not the biggest carnivore around) are predators mostly, and scavengers whenever they can. I've no doubt that T. rex scavenged too - just not primarily.