• ebolapie@lemmy.world
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      2 months ago

      Somewhere between 150 and 160, depending on the tennis balls. Hope this helps

      https://www.wolframalpha.com/input?i=9kg+%2F+mass+of+a+tennis+ball

      Edit: Additionally, that’s about 63½ European swallows, assuming an average weight of 5 ounces. Given that a European swallow must beat its wings 43 times per second to maintain airspeed velocity, it’d be a proper racket.

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      Those numbers are from monty python and the holy grail and are very wrong. I am spreading misinformation online.