(Or at least cause a really big explosion.)
The following facts are from What If?: Serious Scientific Answers to Absurd Hypothetical Questions by xkcd creator Randall Munroe.
1. Create a Global Windstorm:
Randall Munroe / WHAT IF?: Serious Cientific Answers to Absurd Hypothetical Questions
Q: What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?
A: If the Earth stopped and the air didn't, the result would be a sudden thousand-mile-per-hour wind.
The wind would be highest at the equator, but everyone and everything living between 42 degrees north and 42 degrees south — which includes about 85 percent of the world's population — would suddenly experience supersonic winds.
The highest winds would last for only a few minutes near the surface; friction with the ground would slow them down. However, those few minutes would be long enough to reduce virtually all human structures to ruins.
2. Pitch a Baseball at 90% the Speed of Light:
Randall Munroe / WHAT IF?: Serious Cientific Answers to Absurd Hypothetical Questions
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