已知:s=2400m,v 1=2m/s,t 2=10min=600s
求:v 2
小刚所用的时间t 1=
s
v 1 =
2400m
2m/s =1200s;
小明的时间t=t 1-t 2=1200s-600s=600s;
小明骑车的速度v=
s
t =
2400m
600s =4m/s.
答:小明骑车的速度是4m/s.
已知:s=2400m,v 1=2m/s,t 2=10min=600s
求:v 2
小刚所用的时间t 1=
s
v 1 =
2400m
2m/s =1200s;
小明的时间t=t 1-t 2=1200s-600s=600s;
小明骑车的速度v=
s
t =
2400m
600s =4m/s.
答:小明骑车的速度是4m/s.