[Python] [21] [experimental demo includes exercises ball rebound height] [seek]

Original title:

Ball free fall from a height of 100 meters, the anti-jump back after each landing half its original height; down again, find it at the 10th floor, after a total of how many meters? 10th rebound tall?

 

My source:

# ! / Usr / bin / Python 
# encoding = UTF. 8- 
# - * - Coding: UTF-. 8 - * - 

#   a ball free fall from a height of 100 meters, after each jump back half of the original anti-fall height; then fall , find it at the 10th floor, after a total of how many meters? 10th rebound tall? 

X = int (INPUT ( " Please INPUT The nuber: \ n- " ))   # selected number 
Y = 100 # Total rebound distance S 
S = 100 # calculate S for I in Range (. 1, X +. 1 ): 
    S = S + * 100 (0.5 ** I) * 2 # x-th rebound height H; 
H = 100 * (0.5 ** x)
 Print (H, S)









 

 

Can be found, x greater the input, s closely approximates 300, but still less than 300;

 

result:

 

 

 

 

 

The original title given answers:

 

 

 

 

-------- (I am dividing line) --------

reference:

1. RUNOOB.COM：https://www.runoob.com/python/python-exercise-example20.html

 

 

Remarks:

Initial modified: October 3, 2019 13:14:03

Environment: Windows 7 / Python 3.7.2