Question 12
From the top of a building, 600m above ground, a ball was dropped vertically downward. The ball rebounded vertically upward to 1/2 of the height from where it had fallen each time it hit the ground. Find the total vertical distance the ball had traveled in the air when it hit the ground for the fifth time.
**Editorial note for this self-study exercise:** The initial fall ends at the first ground impact. Stop counting at the fifth impact, including that last downward journey and excluding any later rebound. Enter the distance in meters without units; use a decimal point if needed.
**Editorial note for this self-study exercise:** The initial fall ends at the first ground impact. Stop counting at the fifth impact, including that last downward journey and excluding any later rebound. Enter the distance in meters without units; use a decimal point if needed.