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5 votes
Acceleration - The fastest serve in history

Acceleration - The fastest serve in history-example-1
User Olical
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2 Answers

4 votes
I think it 5 to 10 mins
User Dmitry  Meshkov
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7.6k points
3 votes
i think its about 5 or 10 minutes
User Tony Toews
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7.1k points