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t= 5s
vt = 0
vt = v - at
0 = 60 - 5a
5a = 60
a = 12
s = 0,5 t (Vt + v) = 2,5 (60) = 150m
vt = 0 m/s (karena berhenti)
t = 5 s
S = ............?
Penyelesaian :
* Mencari perlambatan
vt = v₀ + at
0 = 60 + 5a
-5a = 60
a = -12 m/s²
* Mencari jarak yang ditempuh
S = v₀t + ½at²
S = 60 • 5 + ½ • (-12) • 5²
S = 300 - 150
S = 150 m
Jadi, jarak yang ditempuh selama pengereman adalah 150 m