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lola0310
@lola0310
January 2021
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svp pouvez vous aidez jai vraiment rien compris merci davance !!!
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aur70
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Bonjour
vitesse : v=200km/h=200*1000/3600=55.6m/s
distance parcourue en t₁=2min 30s=150s : d₁=v*t₁=55.6*150=8333m
distance parcourue en t₂=11s (2min30-2min19) : d₂=v*t₂=55.6*11=611m
on utilise Thalès pour trouver h:
h/75=d₁/d₂ ⇔h=75*d₁/d₂
h=75*8333/611=1023m
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lola0310
January 2021 | 0 Respostas
SVP, URGENT c'est pour demain !! merci
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Bonjourvitesse : v=200km/h=200*1000/3600=55.6m/s
distance parcourue en t₁=2min 30s=150s : d₁=v*t₁=55.6*150=8333m
distance parcourue en t₂=11s (2min30-2min19) : d₂=v*t₂=55.6*11=611m
on utilise Thalès pour trouver h:
h/75=d₁/d₂ ⇔h=75*d₁/d₂
h=75*8333/611=1023m