Question

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Answer 1

$0.9 \mathrm{\dfrac{m}{min}}=\dfrac{0.9\times10^2}{60} \mathrm{\dfrac{cm}{s}}=\dfrac{90}{60} \mathrm{\dfrac{cm}{s}}=\boxed{1.5\ \mathrm{cm/s}}$

Answer 2

Explicação:

0,9 m/min

0,9 m = 9 cm

1 min = 60 s

0,9 m/ min = 9 ocm/60 s = 1,5 cm/s