A Rubber Ball

Riddle: A rubber ball is tossed off the top of a 90 foot building. Every time it bounces, it goes back up half way. How many bounces will the ball take before it stops?

Answer: The answer is infinite, in a gravity free world. But of course gravity will eventually stop it.

Source: https://www.riddles.com/127

A rubber ball is tossed off the top of a 90 foot building. Every time it bounces, it goes back up half way. How many bounces will the ball take before it stops? — A Rubber Ball by Anonymous v1.

Riddle: A rubber ball is tossed off the top of a 90 foot building. Every time it bounces, it goes back up half way. How many bounces will the ball take before it stops? Answer: The answer is infinite, in a gravity free world. But of course gravity will eventually stop it. — by Anonymous v2.