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m=2000kg
v=54km/h=15m/s
t=15s
=================
Szukane:
F=?
=============
Wzór:
F=m*a
a=Δv/Δt
=================
a=15m/s/15s
a=1m/s^2
F=m*a
F=2000kg*1m/s^2
F=2000N=2kN
Pozdrawiam kari9812 :)