nomor 8 ya kak? pake cara

fase 1 , GLBB dipercepat

vt = vo + at1
4 m/s = 0 m/s + a.2 s
a = 2 m/s²

s1 = vot1 + 1/2 at1²
s1 = 0 + 1/2 . 2 m/s².(2 s)²
s1 = 4 m

fase 2 , GLB

s2 = s - s1
s2 = 10 m - 4 m
s2 = 6 m

s2 = v . t2
6 m = 4 m/s . t2
t2 = 1,5 s

t total = t1 + t2
t total = 2 s + 1,5 s
t total = 3,5 s