Wyjaśnienie:
[tex]a = \frac{v}{t} \\ a = \frac{12 \frac{m}{s} }{60s} = \frac{1}{5} \frac{m}{ {s}^{2} } = 0.2 \frac{m}{ {s}^{2} } [/tex]
t=1min=60s
