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Verified answer
DINAMIKAm = 1000 kg
F = 5500 N
f = 500 N, berlawansn dengan arah gerak
Vo = 0. .. diam
Vt = 20 m/s
t = __?
percepatan
ΣF = m a
F - f = m a
5500 - 500 = 1000 a
5000 = 1000 a
a = 5 m/s²
waktu tempuh
Vt = Vo + a t
20 = 0 + 5 t
t = 4 s ← jwb