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Baiatul122001id

t₁=2 min=120 s

t₂=8 min=480 s

v₂=36 km/h=10 m/s

d₁=v₁t₁

d₂=v₂t₂

d=d₁+d₂=v₁t₁+v₂t₂

t=t₁+t₂

d=vm*t=>vm=d/t=(v₁t₁+v₂t₂)/(t₁+t₂)=(120*5+10*480)/(120+480)=(600+4800)/600=5400/600=9 m/s

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