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Vo = 90 Km/jam = 25 m/s
a = -2 m/s²
t = 7,5 s
Vt = ........................?
Vt = Vo + at
Vt = 25 + (-2)(7,5)
Vt = 25 - 15
Vt = 10 m/s
Vt = 36 Km/jam
Ok?
v1 = v0 - a t
v1 = 25 - 2 7,5
v1 = 25 - 15
v1 = 10 m/s
v1 = 36 km/jam