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V = 18 km/h = 5 m/s
a = 0,25 m/s²
a = v / t
t = v /a
t = 5 m/s : 0,25 m/s²
t = 20s
s = at² / 2
s = 0,25m/s² * (20s)² / 2
s = 50m
t=v/a
t=5/0,25
t=20s
S=at2/2
S= 0,25 * (20)2/2
S= 50m
v:a=t
v=18 km/h=18 x 1000m:3600s=5 m/s
5 m/s : 0,25 m/s²= t
t=20s
s=at² / 2
s=0,25 m/s² x 20² /2
s=0,25 m/s² x 400 / 2
s=0,25m/s² x 200s²
s=50 m
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