[ادريس9]

المتزلج
vi=1.75m/s
vf = 0m/s
a = -0.2m/s2
الحل
vf=vi+at
at=vf-vi
t = (vf-vi)/a
t = (0m/s -1.75m/s)/-.02m/s2
t = 8.75s