首页
登录
职称英语
Andrew fitted an electric toy car with hard rubber wheels that had deep treads a
Andrew fitted an electric toy car with hard rubber wheels that had deep treads a
游客
2025-02-24
30
管理
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.
[br] Assuming that the car traveled at a constant speed, approximately how far had the car with hard wheels traveled in Trial 3 after 11.25 seconds?
选项
A、22.5 feet
B、37.5 feet
C、75.0 feet
D、253.125 feet
E、Not enough information is given.
答案
B
解析
The correct answer is B. 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.
75x11.25 = 22.5x
843.75 = 22.5x
37.5=x
Therefore, the car traveled 37.5 feet in 11.25 seconds.
转载请注明原文地址:https://tihaiku.com/zcyy/3970617.html
相关试题推荐
Andrewfittedanelectrictoycarwithhardrubberwheelsthathaddeeptreadsa
Andrewfittedanelectrictoycarwithhardrubberwheelsthathaddeeptreadsa
Inaboxof10electricalparts,2aredefective.(a)Ifyouchooseonepartatr
RUBBER:TIRE::A、skin:hairB、silver:cutleryC、window:paneD、erosion:ironE、piece
Mildelectriccurrenthadbeenthoughtto______overactivebrainregionsthatcau
RUBBER:TIRE::A、skin:hairB、silver:cutleryC、window:paneD、erosion:iron
Someoftheearliestbicyclescameequippedwithsolidwoodenwheelsthatwerea
Almostallformsoflarge-scaleelectricpowergenerationpollutetheenviro
Thepiechartsbelowshowunitsofelectricityproductionbyfuelsourcein
Thediagrambelowshowshowgeothermalenergyisusedproduceelectricity.S
随机试题
WhatisaPortCity?Theportcityprovidesafascinatin
神经根型颈椎病患者,臂丛牵拉试验致食指、中指发麻,肱三头肌反射减弱。判断病变的椎
草莓舌见于( )。A.麻疹 B.口疮 C.风疹 D.猩红热 E.流行性
基金托管人召集基金份额持有人大会应至少提前()日公告大会的召开时间、会议形
增值税一般纳税人外购原材料时,应计入材料采购成本的有( )。A.保险费 B.
操作票中的下令时间是指调度下达操作(A),对于自行掌握的操作是指调度批准的时
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如
焦虑症可采用肌肉放松、()方法,运用自助性认知矫正程序,指导学生缓解考
期货公司变更住所,应当向()提交变更住所申请书等申请材料。A.迁出地期货交易所
胆汁质气质类型的高级神经活动过程的基本特征是()。单选A.强、平衡、灵活 B.
最新回复
(
0
)