首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Andrew fitted an electric toy car with hard rubber wheels that had deep treads and placed the car on a smooth, flat surface. And
Andrew fitted an electric toy car with hard rubber wheels that had deep treads and placed the car on a smooth, flat surface. And
admin
2013-05-19
22
问题
Andrew fitted an electric toy car with hard rubber wheels that had deep treads and placed the car on a smooth, flat surface. Andrew started the car and a stopwatch at the same time. Andrew stopped the stopwatch as the car crossed the 75-foot mark. He calculated the results of 3 separate trials as shown in the table below.
Andrew repeated the procedure, except he fitted the car with soft rubber wheels that were smooth and lacked treads. The results are shown in the table below.
Assuming the car in Procedure 1 traveled at a constant speed, approximately how long would it take the car to travel 100 feet?
选项
A、100 seconds
B、68.4 seconds
C、30.4 seconds
D、25 seconds
E、22.8 seconds
答案
C
解析
The correct answer is C. The first step is to calculate the average speed for all three trials:(22.8+23.2 + 22.5)+3 = 22.8. Next, since the car traveled at a constant speed, you can set up a proportion between the time and distance of the whole run and the time and distance of the partial run: 22.8÷75 = 0.304 sec/feet. Finally, multiply 0.304 by 100 to get 30.4 seconds.
转载请注明原文地址:https://jikaoti.com/ti/xEdYFFFM
本试题收录于:
GRE QUANTITATIVE题库GRE分类
0
GRE QUANTITATIVE
GRE
相关试题推荐
TheAmericansgotothemoviesmainlybecausetheywant______.Whichofthefollowingispeople’snormalresponsetothemovie
TheOlympicCommitteehasdrawnupstrictrulesforthesportsmento______.
NocountryintheworldhasmoredailynewspapersthantheUSA.Therearealmost2,000ofthem,ascomparedwith180inJapan,
TheAmericanandtheBritish______alargenumberofsocialcustoms.
Somanyrepresentatives______,theconferencehadtobeputoff.
Thefactoryhadto______anumberofemployeesbecauseoftheeconomicdeclineinthecountry.
Duringthelastthreedecadesthenumberofpeopleparticipatinginphysicalfitnessprograms______sharply.
Theequationrelatesthevaluesoftwolinkedcurrencies,whereRisthevalueindollarsofonecurrencyandSisthevaluein
Twohundredmultiplesofsevenarechosenatrandom,and300multiplesofeightarechosenatrandom.Approximatelywhatpercent
Forallrealnumbersv,theoperationv*isdefinedbytheequationv*=v-(v/3).If(v*)*=8,thenv=?
随机试题
加强药品质量的监督管理体现的是指药品特殊性的( )人们在需要用药时,时间就是生命,它体现了药品特殊性中的( )
肾俞穴属于足少阴肾经。()
Addingasuitabletag:You’dratherIdidn’tshowupthesedays.
患者男,60岁。因进行性吞咽困难4个月就诊入院,经食管镜检查示食管中段6cm长之管腔狭窄,黏膜中断,病检报告为鳞癌Ⅱ级。体查锁骨上无肿大淋巴结,无声嘶。对于该患者推荐的放射治疗剂量为
我国学者发现能治疗消化性溃疡的抗生素是
以下属于行政法规的是
采用修正的总费用法进行索赔费用的计算时,通常在总费用法的基础上进行一些修正,修正的因素主要有()。
投资银行业务可能因管理不善而导致的风险有()。
(2015年改)甲公司购买一台新设备进行旧设备更新。新设备购买价为36000元,预计使用寿命10年,预计净残值为4000元(与最终报废残值一致),采用年限平均法计提折旧(与税法要求一致),每年营运成本为8000元,假设当期折现率为10%。公司适用的所
下列酒类产品中,包装物押金应并人销售收入计征消费税的有()。
最新回复
(
0
)