Answer / nishanth

to reach land
first time it travels 8 mtrs
next time (half=4) 4+4 mtrs (up&down)
next time (half=4) 2+2 mtrs (up&down)
next time (half=4) 1+1 mtrs (up&down)

and so on.
Altogether,close to 24 mtrs.

Answer / sabarish

Land to ground from air : 8
first bounce from ground to air back : 8/2
first bounce from air to ground: 8/2

for second and viceverse : 8/4 + 8/4

..... 8/8 + 8/8 + 8/16+ 8/16...


adding altogether we get approx 24m

Answer / arun a k

8up+4up+4down+2up+2down+1up+1down+1/2up+1/2down+1/4up+1/4dow
n+..................
Almost 24

Answer / vikas kr

24

Answer / baburammca

8+8(.5)*2+8(.5)^2*2+8(.5)^3*2...
8+2(8(.5)+8(.5)^2+8(.5)^3...)
Infinity= u1/1-r
u1=8(.5). r=.5
8+2(8(.5)/1-5)
8+2*8
24

Answer / v venu gopal

8 + 8/2 + 8/4 + 8/8 + ..... 8(1+ 1/2 + 1/4 + ...) a GP of
infinite sum.... formula is ... a / (1-r)...
so,a = 1 and r = 1/2;

ans : 16

Answer / sunil902

16

Answer / suganya

Ball dropped frm 8 meter,
Half the distance=1/2(8)
=4
Total distanc travelled= 8+4+4
=16 meter

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