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徐州距离茅村约15公里,12路公交车从茅村出发到徐州,同时821路公交车从徐州出发到茅村,如果12路公交车的平均速度为72km/h,而821公交车的平均速度为60km/h,则两车经过分钟相遇,相

题目详情
徐州距离茅村约15公里,12路公交车从茅村出发到徐州,同时821路公交车从徐州出发到茅村,如果12路公交车的平均速度为72km/h,而821公交车的平均速度为60km/h,则两车经过______分钟相遇,相遇地点距离徐州______km.
▼优质解答
答案和解析
两车相遇的时间t=
S
V
=
S
V1+V2
=
15km
72km/h+60km/h
≈0.11h=6.6min;
距离徐州的路程S1=V2t=60km/h×0.11h=6.6km.
故答案为:6.6;6.6
S
V
SSSVVV=
S
V1+V2
=
15km
72km/h+60km/h
≈0.11h=6.6min;
距离徐州的路程S1=V2t=60km/h×0.11h=6.6km.
故答案为:6.6;6.6
S
V1+V2
SSSV1+V2V1+V2V1+V21+V22=
15km
72km/h+60km/h
≈0.11h=6.6min;
距离徐州的路程S1=V2t=60km/h×0.11h=6.6km.
故答案为:6.6;6.6
15km
72km/h+60km/h
15km15km15km72km/h+60km/h72km/h+60km/h72km/h+60km/h≈0.11h=6.6min;
距离徐州的路程S11=V22t=60km/h×0.11h=6.6km.
故答案为:6.6;6.6