thank you for your assistance with working out this problem.

9. A rubber ball is dropped from the top of a hole . Exactly* 3.5 seconds later , the sound of the rubber ball hitting bottom Hint. The distance that a dropped object falls in 1 second is heard . How deep is the hole ? represented by the formula's - 1 Gtf. The speed of sound 1 10 0 fu/sec. The hole is approximately feet deep ( Round to the nearest tenth