Odpowiedź :
F= 1000 N
ΔV=55 m/s
t=5s
m=?
a=ΔV/t
F=m*a
m=F/a
m=(F*t)/ΔV
m=(1000*5)/55
m≈90,91 kg
[tex]Dane:\\\\F=1000N\\\Delta v = 55\frac{m}{s} \\\Delta t = 5s\\\\Szuk.\\m=?\\\\Roz.\\\\a=\frac{F}{m}\\\\a=\frac{\Delta v}{\Delta t}\\\\\frac{F}{m}=\frac{\Delta v}{\Delta t}\;\;\;/\cdot m\\\\F=\frac{m\Delta v}{\Delta t}\;\;\;/\cdot \Delta t\\\\F\Delta t = m\Delta v\;\;\;/:\Delta v\\\\m=\frac{F\Delta t}{\Delta v}\\\\m=\frac{1000N\cdot 5s}{55\frac{m}{s} } = \frac{5000kg}{55} \approx 90,91kg[/tex]