Respostas

2013-12-05T21:31:56-02:00
36 km/h → 10 m/s (divide por 3,6)

Vm= \frac{d}{t} \\
\\t= \frac{d}{vm} \\
\\t= \frac{30}{10} \\
\\t=3~s
2013-12-05T21:34:20-02:00
 \frac{d}{v} = t

v = 36 km/h = 10 m/s
d = 30 m
 \frac{30}{10} = t
t = 3s