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Mass of a small passenger car (800 kg) is 200 x Mass of a regulation womens' shot (in the shot put athletics event) (4 kg)
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Speed of China's Shijiazhuang?Wuhan high-speed train (350 km/h)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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