A few days ago
Anonymous

geometric sequence?

a ball takes 1 second to hit the ground when dropped. It takes 90% of this time to rebound to its new height. This continues until the ball comes to rest. How long does it take for the ball to come to rest?

Top 2 Answers
A few days ago
UCLAdrummer

Favorite Answer

starting quantity/(1-r) in this case the answer is 1/(1-0.9)=10
0

A few days ago
ganzdaoben
Actually, it will never come to rest, because 90% of anything that is not zero is never zero.

Rebound time = .9 (drop time)

If drop time is never zero, rebound time will also never be. It will get real close, but never actually be zero.

0