Odpowiedź:
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siła masa przyspieszenie
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180 N 9 kg 20 m/s²
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140 N 7 kg 20 m/s²
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88 N 8 kg 11 m/s
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Wyjaśnienie:
[tex]F = m\cdot a = 9 \ kg\cdot20\frac{m}{s^{2}} = \underline{180 N}\\\\a = \frac{F}{m} = \frac{140 \ N}{7 \ kg} = \frac{140 \ kg\cdot\frac{m}{s^{2}}}{7 \ kg}}= \underline{20\frac{m}{s^{2}}}\\\\m = \frac{F}{a} = \frac{88 \ N}{11\frac{n}{s^{2}}}=\frac{88 \ kg\cdot\frac{m}{s^{2}}}{11\frac{m}{s^{2}}} = \underline{8 \ kg}[/tex]
