首页
登录
职称英语
An engineer designed a ball so that when it was dropped, it rose with each bounc
An engineer designed a ball so that when it was dropped, it rose with each bounc
游客
2024-01-14
59
管理
问题
An engineer designed a ball so that when it was dropped, it rose with each bounce exactly one-half as high as it had fallen. The engineer dropped the ball from a 16-meter platform and caught it after it had traveled 46.5 meters. How many times did the ball bounce?
选项
A、5
B、6
C、7
D、8
E、9
答案
A
解析
You can approach this problem by just adding up the bounces. It falls 16m, then bounces 8m and drops 8m (now it has traveled 32m), bounces 4m and falls 4m (40m), bounces 2m and falls 2m (44m), bounces 1m and falls 1m (46m), bounces 0.5m and is caught by the engineer. That was 5 bounces.
转载请注明原文地址:https://tihaiku.com/zcyy/3360395.html
相关试题推荐
I______mywalletwhenIwasshoppinginthestore.A、musthavedroppedB、shouldh
Afterbeingtestedinmanyways,thisnewly-designedmachinewill______inthe
Toronto’sthirdCityHall,nowknownasOldCityHall,wasdesignedbyEdwar
Toronto’sthirdCityHall,nowknownasOldCityHall,wasdesignedbyEdwar
Thesebooksaredesignedto______children.A、agreewithB、applyforC、appealtoD
Yourtemperaturehasdropped,soyou______takethatmedicine.A、don’tB、mustn’tC
Afterbeingtestedinmanyways,thisnewly-designedmachinewill______inthene
Australianresearchershavediscoveredelectroreceptors(sensoryorgansdesigned
Anadvertisementdesignedtoconvincereadersofthegreatdurabilityofautomob
Thenumberofundergraduatedegreesinengineeringawardedbycollegesandunive
随机试题
Thewordconservationhasathriftymeaning.Toconserveistosaveandprot
TheInternetandcellphonesarebringingpeopletogether,not【C1】______usa
Whentheyfinishedplaying,thechildrenweremadeto________allthetoysthey
采用砂浆长度法进行碎石的碱活性试验,以下正确的描述为()。A.当工程所使用
控制信息的流程,监控和指导认知过程进行的策略指的是__________.A.元
正式群体的发展经历了_____、_____和集体群体三个阶段。
外国的组织申请一次性测绘的,应当依法提交申请材料( )。A.一式两份 B.一
Itriedtodetachmyselftherealityof
A
提出“众建诸侯而少其力”的是( )A.贾谊《治安策》 B.晁错《削藩策》
最新回复
(
0
)