1)A bicyclist makes a trip that consists of three parts,each in the same direction(due north) along a straight road.During the first part,she rides for 22 minutes at an average speed of 7.2 m/s.During the second part,she rides for 36 minutes at an av

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/28 21:26:59
1)A bicyclist makes a trip that consists of three parts,each in the same direction(due north) along a straight road.During the first part,she rides for 22 minutes at an average speed of 7.2 m/s.During the second part,she rides for 36 minutes at an av
xSNA~skݍ 11bNn33-FEU bBLC D~Bxζ} V f7sS=P0!aHΪ C"G=8P%\,%X6 QE jR2 +xLܳgh()_9.̱&u:HN9)X@g3Ð&(G#tYߡ{s sJe!ʐ{Y'rcu-ܰ'ޞ휨ݳŮ:;R,uƸ`m@Λw Bj};Hk%XDZ0&}nt$ST%u:}-LBݑdJW

1)A bicyclist makes a trip that consists of three parts,each in the same direction(due north) along a straight road.During the first part,she rides for 22 minutes at an average speed of 7.2 m/s.During the second part,she rides for 36 minutes at an av
1)A bicyclist makes a trip that consists of three parts,each in the same direction(due north) along a straight road.During the first part,she rides for 22 minutes at an average speed of 7.2 m/s.During the second part,she rides for 36 minutes at an average speed of 5.1 m/s.Finally,during the third part,she rides for 8.0 minutes at an average speed of 13 m/s.
a) how far has the bicyclist traveled during the entire trip?
b)what is her average velocity for the trip?

1)A bicyclist makes a trip that consists of three parts,each in the same direction(due north) along a straight road.During the first part,she rides for 22 minutes at an average speed of 7.2 m/s.During the second part,she rides for 36 minutes at an av
一个单车手将要完成一个分三段的路程,每段都沿一条直路,向同一个方向(北)走.第一段她以平均7.2m/s的速度走了22分钟.第二段她以平均5.1m/s的速度走了36分钟.最后,第三段她以平均13m/s的速度走了8.0分钟.问:
(A) 她整个路程一共走了多远?
(B) 她整个路程的平均速度是多少?
(A) s总 = v1t1 + v2t2 + v3t3 = 7.2 * (22 * 60) + 5.1 * (36 * 60) + 13 * (8.0 * 60) = 26760(米)
(B) v平均 = s总 / t总 = s总 / (t1+t2+t3)
= 26760 / [(22 + 36 + 8) * 60]
= 6.76(米/秒)

1)A bicyclist makes a trip that consists of three parts,each in the same direction(due north) along a straight road.During the first part,she rides for 22 minutes at an average speed of 7.2 m/s.During the second part,she rides for 36 minutes at an av What makes a good whats a makes she makes a mice A s_____ makes shoes. That makes a A secret makes a women A secret makes a girl A SECKER MAKES A MAN a secrect makes a man A secret makes a woman A strict makes a woman what makes a good poem what makes a good poem A Secret makes women women What makes a happy marriage? What Makes A Man 歌词 What makes a good friend? what makes a road broad