s = 4,5 t² + 2t feet
kecepatan V = turunan dari posisi
jadi :
s'(t) = v(t) = 9t + 2
v =30
9t +2 = 30
9t = 28
t = 28/9
t = 3,1 s
waktunya 3,1 detik
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s = 4,5 t² + 2t feet
kecepatan V = turunan dari posisi
jadi :
s'(t) = v(t) = 9t + 2
v =30
9t +2 = 30
9t = 28
t = 28/9
t = 3,1 s
waktunya 3,1 detik