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kacepatan mula2 (vo) = 10m/s
perlambatan (a) = - 2m/s² (- karena perlambatan)
kecepatan akhir (vt) = 0 (karena berhenti)
Dit: waktu (t).....?
t = vt - v0 / a
t = 0 - 10 / -2
t = -10/-2
t = 5 sekon