v₀ = 80 m/s
v = 0
t = 20 s
v = v₀ -at
0 = 80 - a.20
20a = 80
a = 80/20
a = 4 m/s²(karena direm maka hasilnya negatif)
jawaban: b
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v₀ = 80 m/s
v = 0
t = 20 s
v = v₀ -at
0 = 80 - a.20
20a = 80
a = 80/20
a = 4 m/s²(karena direm maka hasilnya negatif)
jawaban: b