Is 25,000 tonnes as heavy as a Tennis Ball?
It's about 450,000,000 times as heavy as a Tennis Ball
The weight of a Tennis Ball is about 0.00005770 tonnes.
(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 0.00005770 tonnes. 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.
There's more! See other comparisons to 25,000 tonnes...