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(10m/s)^2=(25m/s)^2+2*a*87.5m
100m^2/s^2=625m^2/s^2+175am
-175am=625m^2/s^2-100m^2/s^2
:(-m)
175a=-525m/s^2
a=-3m/s^2
Vt = 10 m/s
S = 87,5 m
a = ....
(Vt)² = Vo² + 2 a s
100 = 625 + 2 a 87,5
-525 = 175 a
a = - 3 m/s
#tanda negatif menandakan perlambatan