no.9 tolong dong yang bisa

F = 55 + 35 = 90 N
s = 8 m
W = ?

W = F . s
W = 90 . 8
W = 720 J

jawaban A

USAHA

F1 = 55 N
F2 = 35 N
S = 8 m
α = 0°

W = ΣF • S cos α
W = (F1 + F2) • S cos 0°
W = (55 + 35) • 8 • 1
W = 90 • 8
W = 720 J ← jwb