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
33
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://www.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
[originaltext]M:Hey,anyideaofwhattodothissummervacation?Theredoesn’
一名合格的中国导游员应该具备的首要条件是（ ）。A.热爱祖国 B.情操高尚
患儿，男，6岁，发热3天，口腔内黏膜、齿龈溃烂，周围红肿，疼痛拒食，舌质红，苔薄
（）光纤除了在日本等国家干线网上有应用外，在我国干线网上几乎没有应用。A、G．6
下列哪种胃炎最常见A.急性单纯性胃炎 B.糜烂性胃炎 C.化脓性胃炎 D.
Lb4A1111为了限制故障的扩大，减轻设备的损坏，提高系统的稳定性，要求继电
地球自转促进了地球形状的形成，地球自转所产生的惯性离心力，使得地球物质由两极向赤
MMPI及MMPI-2剖面图中，两点编码为13/31的受测者可能被诊断为()
关于劳动力流动对企业和劳动者产生的影响的说法，错误的是（ ）。A.有经验员工的
企业转销确实无法支付的应付账款时，应编制的会计分录是（）。 A.借：应付账
最新回复
(
0
)
