Z II zasady dynamiki:
[tex]a = \frac{F}{m} \ \ |\cdot m\\\\F = m\cdot a[/tex]
b)
[tex]m = 500 \ g = 0,5 \ kg\\a = 30\frac{m}{s^{2}}\\\\F = m\cdot a = 0,5 \ kg\cdot30\frac{m}{s^{2}} = 15 \ N[/tex]
c)
[tex]m = 60 \ dag = 0,6 \ kg\\a = 5\frac{cm}{s^{2}} = 0,05\frac{m}{s^{2}}\\\\F = m\cdot a = 0,6 \ kg\cdot0,05\frac{m}{s^{2}} = 0,03 \ N[/tex]
d)
[tex]m = 750 \ g = 0,75 \ kg\\a = 16\frac{m}{s^[2}}\\\\F = m\cdot a = 0,75 \ kg\cdot16\frac{m}{s^{2}} = 12 \ N[/tex]
