rozwiążcie chociaż kilka, bo nie wiem o co w nich chodzi ; /
166. F=ma
F/m=a
1,8N/0,2kg=a
9m/s2=a
167. F=ma
F/a=m
30N/5m/s2=m
6kg=m
168. Fc=ma
Fc=15kg*3m/s2
Fc=45N
Fc=F1+F2
Fc-F1=F2
45N-36N=F2
9N=F2
169. F=2Q
ma=2mg
a=2g
171. F=ma
F=m*(v1-v2)/t
F=20000kg(15m/s-0m/s)/100s
F=3000N
172. F=ma
F=m*(v1-v2)/t ==> t=m(v1-v2)/F
t=1200kg(20m/s)/2000N 72km/h=20m/s
t=12s
175. F=ma
F=m(v1-v2)/t
40N=m(10m/s-4m/s)/60s
40N=6m/60s
60s*40N=6m
2400kg=6m
400kg=m
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166. F=ma
F/m=a
1,8N/0,2kg=a
9m/s2=a
167. F=ma
F/a=m
30N/5m/s2=m
6kg=m
168. Fc=ma
Fc=15kg*3m/s2
Fc=45N
Fc=F1+F2
Fc-F1=F2
45N-36N=F2
9N=F2
169. F=2Q
ma=2mg
a=2g
171. F=ma
F=m*(v1-v2)/t
F=20000kg(15m/s-0m/s)/100s
F=3000N
172. F=ma
F=m*(v1-v2)/t ==> t=m(v1-v2)/F
t=1200kg(20m/s)/2000N 72km/h=20m/s
t=12s
175. F=ma
F=m(v1-v2)/t
40N=m(10m/s-4m/s)/60s
40N=6m/60s
60s*40N=6m
2400kg=6m
400kg=m