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3,750,000 grams is about 65,000 times as heavy as a Tennis Ball
In other words, the weight of a Tennis Ball is 0.00001540 times that amount.
(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 56.0 g to 59.4 g. Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm.
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