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Sorry for all the Geomtric Series Questions. I just find that its a hard topic to understand.

 

A ball is dropped from 405 meters and rebounds two-thirds the distance it falls each time it bounces. How many meters will the ball have traveled when it hits the ground the fourth time?

 

Thanks in advance smiley

 Jul 9, 2020
 #1
avatar+744 
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yeah, same geometry is not my cup of teasmiley!

 Jul 9, 2020
 #2
avatar+643 
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Lol not geometry...it's geometric series.

gwenspooner85  Jul 9, 2020
 #3
avatar+744 
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whatever, totally the same thing!!

 Jul 9, 2020
 #4
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First drop  405  meters    then it goes up AND down      2/3 (405)  =  270     

 

second bounce   goes up and down         2/3 270 = 180

third bounce     up and down     2/3  180 =   120

405   + 2 (270)  + 2(180 )   + 2(120) = ........m

 Jul 9, 2020

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