现在玩cf用什么鼠标好:考考你:狗在兔后10米,狗走5步的路程兔要走9步,兔走3步的时间狗走2步,狗走多少米追上兔?
来源:百度文库 编辑:神马品牌网 时间:2024/05/19 21:42:10
5x=9y, ==> x:y=9:5
3y/v2 = 2x/v1 ==>
v1:v2=2x:3y = 6:5
设v1=6v,v2=5v,
t=10/(v1-v2)=10/v,
s1=v1*t=6v*(10/v)=60(m)
5x=9y, ==> x:y=9:5
3y/v2 = 2x/v1 ==>
v1:v2=2x:3y = 6:5
设v1=6v,v2=5v,
t=10/(v1-v2)=10/v,
s1=v1*t=6v*(10/v)=60(m)