國三力與運動問題 - 運動
By Wallis
at 2007-12-15T00:00
at 2007-12-15T00:00
Table of Contents
1.體重100kgw的博能由甲地以5kgw之力水平向東推20kgw的臺車,使臺車以2m/s的等速前進,10秒後到達乙地,則博能對此車作功多少J?2.承上題,若博能再以相同大小的力將臺車向西推回甲地,則整個來回的過程中,博能對車子共作功多少???第1.答案為980J第2.答案為0請問為何阿?...Showmore
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運動
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By Oscar
at 2007-12-18T15:32
at 2007-12-18T15:32
By Megan
at 2007-12-17T12:09
at 2007-12-17T12:09
By Aaliyah
at 2007-12-17T01:30
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