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Exercício de respondam essa...
Exercício:
Um projétil, com velocidade constante de 300m/s, é disparado em direção ao centro de um navio que se move a uma velocidade constante de 10m/s em direção perpendicular á trajetória do projétil. Se o impacto ocorrer a 20m do centro do navio, a que distância foi feito o disparo?
a)150m
b)300m
c)600m
d)3,000m
e)6.000m
Informações Adicionais:
obrigada!
a ) 150m
E como vc sabe que é 150?
c ) 600m
Como o projetil acerta o navio a 20 metros de distancia do alvo, e o navio se move a 10 metros por segundo, podemos concluir que passaram 2 segundos desde o disparo ate atingir o navio.
Esses 2 segundos tambem foi o tempo que o projetil levou para chegar ate o navio e como o projetil viaja a 300 metros por segundo, a distancia percorrida em 2 segundos foi de 600m.
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