Asked by Ushva
A super bouncy ball is thrown 25 m into the air the ball falls rebounds to 70% of the height of the previous balance and falls again. If the ball continues to rebound and fall in this manner, find the total distance the ball has a travel after it hits the ground the fifth time. Round your answer to 2 decimals places.
ARGENT ‼️‼️‼️‼️‼️‼️
ARGENT ‼️‼️‼️‼️‼️‼️
Answers
Answered by
oobleck
Consider the geometric sequence with
a = 25
r = 0.7
This is the sequence of heights. You want round trips, or
2*S5 = 2 * a (1-r^5)/(1-r)
so plug in your numbers
and ARGENT! means SILVER!
a = 25
r = 0.7
This is the sequence of heights. You want round trips, or
2*S5 = 2 * a (1-r^5)/(1-r)
so plug in your numbers
and ARGENT! means SILVER!
Answered by
Ushva
Thanks for responding but i was wonder how and why we multiply the 2 at the beginning with S5?
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