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2010-04-10T14:08:20+02:00
Δv = 90-18 = 72 km/h = 72 * 1000/3600 = 20 m/s
t = 20s

a = Δv/t
a = 20/20
a = 1 m/s²
10 4 10
2010-04-10T14:11:09+02:00
A=V/t
Vk-Vp= 90-18=72 72 *1000/3600= 20
a= 20/20=1 m/s2
6 2 6
2010-04-10T14:12:25+02:00
A=v:t
90km/h-18km/h=72km/h przyrost prendkości
72km*1000:3600=20m/s
20m/s:20s=1m/s2
4 2 4