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Vo = 0
Vt = 72 km/jam
Δt = 30 s
dit : a ?
dijwab :
Vt = (72x1000)/3.600
= 20 m/s
a = (Vt-Vo)/Δt
= (20 - 0)/30
= 20/30
= 2/3 m/s²
= 0,667 m/s²