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lorasvet [3.4K]
4 years ago
14

Em quanto tempo o um paraquedista, em queda livre, atinge a velocidade de 90 m/s?

Physics
1 answer:
Nikitich [7]4 years ago
3 0

Responda:

9.2s

Explicação:

Dada a pergunta:

Em quanto tempo o um paraquedista, em queda livre, atinge a velocidade de 90 m / s?

Em queda livre; a aceleração de um corpo = 9,8m / s ^ 2

Portanto, quanto tempo leva para atingir uma velocidade de 90 m / s

Da primeira equação de movimento:

v = u + em

v = velocidade final; u = velocidade inicial; a = aceleração; t = tempo

90 = 0 + 9,8t

90 = 9,8t

t = 90 / 9,8

t = 9,18s = 9,2 s

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