Question

Giúp mình với

Answer 1

a,\(\Rightarrow\left\{{}\begin{matrix}v1=10m/s\\v2=\dfrac{S}{t}=\dfrac{3600}{300}=12m/s\end{matrix}\right.\)\(\Rightarrow v2>v1\)=>nguoi thu 2 di  nhanh hon

b,\(\Rightarrow\left\{{}\begin{matrix}S1=v1t=10.1800=18000m=18km\\S2=v2t=12.1800=21600m=21,6km\end{matrix}\right.\)

\(\Rightarrow\Delta S=S2-S1=3,6km\)