Question

I DON'T GET THIS PLEASE ANSWER THANKS!!!

Answer 1

If in 1st bounce ball reaches x height then in 2nd bounce ball reaches x/2.............on 3rd.
x/4 and so on... .i.e. the bouncing
of ball is in GP.
t1=a=128
r=1/2=0.5
t12=?

t12=a[r^(n-1)]
=128[0.5^(12-1)]
=128×(0.5^11)
= 0.06249999 feet