Jurassic Park had us all fooled: Outstripping a Tyrannosaurus rex in a Jeep would've been easy-peasy because, well, T. rex couldn't run.
After much debate about how fast T. rex moved—previous estimates suggested up to 45 miles per hour—scientists at the University of Manchester used advanced computer simulations to come up with the most accurate assessment yet.
Taking into account the beast's muscles and skeleton, they discovered running would've been "impossible" without a T. rex's legs buckling under its 7-ton weight, per the BBC. Study author William Sellers says T. rex instead walked at a pace of up to 12 miles per hour—a fast jog for humans and less than half of Usain Bolt's top speed of 27.8mph, report Reuters and Buzzfeed.
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