jaka sila nalezy dzialac na samochod o masie 1000 kg ,aby w ciagu 20s nadac mu przyspieszenie 72kg/h
m=1000kg
t=20s
v=72kg/h = 20 m/s
a=v/t = 20/20 = 1
F=ma = 1000*1 = 1000 [N]
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m=1000kg
t=20s
v=72kg/h = 20 m/s
a=v/t = 20/20 = 1
F=ma = 1000*1 = 1000 [N]