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s1 = 100 m
v = 5 m/s
t = 80 s
v2 = 1m/s
szukane :
v śr = ?
v = s/t
v = 100m/ 80 s
v = 1,2 m/s
v2 = 1 m/s
vśr = v1 - v2
vśr = 1,2 - 1
vśr = 0,2 m/s
Proszę :)
V=S (całk)/t (całk)
t₁=S₁/V₁= 100m/5[m/s]=20s
S₂=V₂×t₂=1[m/s]×80[s]=80m
V(średnie)=(S₁+S₂)/(t₁+t₂)=180m/100s=1,8[m/s]