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sciencequestionDistanceanddisplacementaresimilar,butdifferent,quantities.a.Adriverdrovefor6hoursatanaveragespeedof170km/handanaveragevelocityof0.Howcantahtbe?mustanswerin1hour,couldanybodyhelp?
题目详情
science question
Dis tance and dis placement are similar,but different,quantities.
a.A driver drove for 6 hours at an average speed of 170km/h and an average velocity of 0.How can taht be?
must answer in 1hour,could any body help?
Dis tance and dis placement are similar,but different,quantities.
a.A driver drove for 6 hours at an average speed of 170km/h and an average velocity of 0.How can taht be?
must answer in 1hour,could any body help?
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答案和解析
= =不知道速率怎么算的.orz||||
按照自己的理解是,他始终保持匀速运动,速率就=0.
不知道对不对.
按照自己的理解是,他始终保持匀速运动,速率就=0.
不知道对不对.
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