Question of the Day #321 (13/8/10)

[Kazza]

I drop a football from a roof at 100m off the ground. Each time it hits the ground it bounces 3/5 of the height it fell.

How far will the ball have travelled on the 5th bounce?


PM ANSWERS ONLY and ONE ANSWER ONLY, UNLESS I ASK FOR MORE

PLEASE MAKE SURE YOU POST ON THIS THREAD AFTER YOU HAVE PM'D ME OR ELSE YOU WON'T GET YOUR REP POINTS!....... :spank:


Please read the rules Question of the day ? - Yamaha FZ6 Forums - International FZ6 Motorcycle Community Forum



Also, rep points can't always be applied straight away - limits on the site - but all should be updated by the Sunday after the QOTD

 

[westgoingzax]

Whoohoo! First pm of the day sent your way (hey that rhymes too).

 

[kevlarfz6]

PM Sent.... What are these meters you speak of?

 

[SirIsaac]

PM sent...

 

[wrlomas]

pm sent in the A.M.

 

[SueMc]

PM sent!!!

 

[JustinID]

Meters? I thought it was Metres? It's not her fault though... they're so confused they think it's winter! :BLAA:

PM sent!

 

[CHEMIKER]

It's obviously miles and not meters anyway. Besides, the question is bogus anyway - everyone knows that because of its oblong shape, a football will never bounce predictably :BLAA:

 

[discgolfdude]

pm on it's way

 

[Kazza]

I drop a football from a roof at 100m off the ground. Each time it hits the ground it bounces 3/5 of the height it fell.

How far will the ball have travelled on the 5th bounce?

361.12m


REP & CASINO CASH WINNERS:

Kevlarfz6
SirIsaac
SueMc

REP WINNERS:

Chemiker


3/5(3/5)(100) 3/5(3/5)(3/5)(100)
(1) (2) (3)
100 + 2(3/5)(100) + 2(3/5)(3/5)(100) + 2(3/5)(3/5)(3/5)(100)
+ 2(3/5)(3/5)(3/5)(100) =
100 + 600/5 + 1800/25 + 5400/125 + 16200/625

= 361.12m

As for metres, get with the modern world guys And footballs - they can be round too


Have a good weekend