Jawabanmu

2014-03-23T17:37:18+07:00
Ф=ωt+(0.5)αt²
Ф=20x3+(0.5)4txt²
Ф=60+2t³
Ф=60+2(3³)
Ф=60+54
Ф=114 rad (besar sudut)

s=Фr
s=114×0.4
s=45.6 meter (jarak tempuh partikel)