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Tempo de Queda livre de um objeto
A altura de um helicóptero em relação ao solo é dada pela equação h=5t³, onde h é dada em metros e t em segundos. Depois de Dois segundos, o helicóptero solta uma mala postal. Qual será a duração da queda deste objeto?
Preciso da resposta da questão pois já procurei em vários sites e não encontro
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Answer #
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Answer #1
Boa Noite!
h = 5t^3
t = 2s -> h = 40m
Supondo g = 10m/s2:
h = g*(t^2)/2
t = sqrt(2*h/g)
t = 2*sqrt(2) ~ 2,8s