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How Fast Can a Bullet Travel?
Don’t blink or you’ll surely miss today’s Wonder of the Day!
How Fast Can a Bullet Travel?
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How Do Bulletproof Vests Work?
Today’s Wonder of the Day can stop a speeding bullet!
How Do Bulletproof Vests Work?
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What Is the Fastest Train?
Today’s sleek Wonder of the Day is faster than a speeding bullet!
What Is the Fastest Train?