A table tennis ball falls from a high altitude, and the bounce height after reaching the ground is about 0.4 times the drop height. If the table tennis ball falls from a height of 25 meters, then it bounces and then falls. What is the bounce height less than when it bounces 5 times? rice.
乒乓球从高空落下，到达地面后弹起的高度约为落下高度的0.4倍，若乒乓球从25米高处落下，那么弹起后再落下，弹5次时它的弹起高度是小于多少米．
<result>0.5</result>