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ditanya : a (t) ; a (t = 4 s) ; a (t = 0)
vektor V =
=
= 4,8 t² + 4,2 t
a) vektor a = a (t) =
=
= 9,6 t + 4,2 m/s²
b) a (t = 4) = 9,6 .(4) + 4,2
= 38,4 + 4,2
= 42,6 m/s²
c) a (t = 0) = 9,6 .(0) + 4,2
= 0 + 4,2
= 4,2 m/s²