Question:

Question

Question:

saifoo.khan · Answer

anonymous · Answer

8?

anonymous · Answer

$$f(x) =125 \left( \frac{2}{5}\right)^x $$ or am I too blue-eyed about this problem ?

saifoo.khan · Answer

How? Why?

ghazi · Answer

3.2

anonymous · Answer

3.2

anonymous · Answer

yes, 3.2 for x=4

anonymous · Answer

except of course this is something physical I fail to understand (-:

anonymous · Answer

lol...everybody got it except me..:D

ghazi · Answer

every time it bounces 2/5 of it's original height..but first bounce is counted when it went 125 inches

anonymous · Answer

125 *(2/5)^4

ghazi · Answer

and after that you need to count for four more

anonymous · Answer

@saifoo.khan  Do u have the answer key

saifoo.khan · Answer

why are we inserting 4? Why not 3?

saifoo.khan · Answer

@Yahoo! , nope.

saifoo.khan · Answer

Because the first bounce has already happened. We are left with 3 of them now?

anonymous · Answer

hmm, you have a point there @saifoo.khan

saifoo.khan · Answer

So @mukushla we correct? :D

ghazi · Answer

because question asked for four bounces after the ball dropped

saifoo.khan · Answer

"After the first bounce " it reaches the height of 125 @ghazi

anonymous · Answer

Yup.....@mukushla  was correct

anonymous · Answer

Yes I guess my interpretation of that text is flawed
it is x=3, which are four bounces, for x=0 initial bounce at a height of 125

saifoo.khan · Answer

Yep!

saifoo.khan · Answer

So medals for Muk?

ghazi · Answer

agreed...!!

anonymous · Answer

Funny formula in general, according to it the ball can do more than one hundred bounces :D Clearly a real world phenomenon!

saifoo.khan · Answer

Hehe.
Thanks all.

ghazi · Answer

not only hundred ...it can go infinite theoretically