A ball is dropped from the top of a 25-m ladder. in each bounce, the ball reaches a vertical height that 3/5 the previous vertical height. determine the total vertical distance travelled by the ball when it contacts the ground for the sixth time. express your answer to the nearest tenth of a meter.

Answer 1

6 round trips, less the 1st 25m upwards
a = 25
r = 3/5
S6 = a(1-r^6)/(1-5)
so, we get 25(1 - (3/5)^6)/(1 - 3/5) - 25 = _____

Answer 2

rats. round trips.
2*25(1 - (3/5)^6)/(1 - 3/5) - 25