Jawabanmu

2014-04-16T19:03:00+07:00
S =  v . t

t= s/v
t= 510/340
t= 1,5 sekon

semoga membantu :)
2014-04-16T19:44:49+07:00
S= V x t x 1/2 510 = 340 x t x 1/2 510 = 170 x t t = 510/170 = 3 sekon