英语翻译If after each bounce it reaches 2/5 of the previous height,then after the second bounce it will reach 2/5 x 125.After the third it will reach 2/5 x 2/5 x 125.After the fourth it will reach 2/5 x 2/5 x 2/5 x 125.This cancels down to 2 x 2 x 2 = 8
2019-04-16
英语翻译
If after each bounce it reaches 2/5 of the previous height,then after the second bounce it will reach 2/5 x 125.After the third it will reach 2/5 x 2/5 x 125.After the fourth it will reach 2/5 x 2/5 x 2/5 x 125.This cancels down to 2 x 2 x 2 = 8
优质解答
那个小球每次落下弹起的高度是上次的2/5,题中告知第一次落下弹起的高度为125,那第二次即2/5*125,第三次落地弹起的高度为2/5*2/5*125,第四次为2/5*2/5*2/5*125,约分过后为2*2*2=8
那个小球每次落下弹起的高度是上次的2/5,题中告知第一次落下弹起的高度为125,那第二次即2/5*125,第三次落地弹起的高度为2/5*2/5*125,第四次为2/5*2/5*2/5*125,约分过后为2*2*2=8