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vt=108 km/jam=30 m/s
t=5 menit=300 s
dit: s ?
jb
vt^2=vo^2-2at
30^2=20^2-2.a.300
900=400-600a
600a=400-900
600a=-500
a=-500/600
= 0.83
s=vot+1/2.a.t^2
30.20+1/2.0,83.300^2
600+37500
38100 m/s