Jawabanmu

Jawaban paling cerdas!
2014-08-31T23:37:30+07:00
R menuju v berarti mengalami turunan.
jd,
r=(7ti+(9t+3t^2)j) m
v=7 i+ (9+6t)j m
v=7i+(9+6(2,5))j m
v=7i+(9+15)j m
v=7i+24j m

IvI =V(7i)^2+(24j)^2
IvI =V49+576
IvI = V625
IvI = 25 m/ s

ket: V =akar
utk penjumlahan diharapkan dihitung ulang ya
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