besar usaha yg bekerja pd balok a.50 joule b.75 joule c. 125 joule d. 200 joule

Usaha (Joule) = Jarak (Meter) × Gaya (Newton)

Simbolnya : W(Usaha) = F(Gaya) × S(Jarak)

W = 40 × 5 = 200 Joule

Usaha = W
F= Gaya
S= Jarak
W= F×s
W= 15+25N × 5m
W= 40 N × 5m
W= 200 Joule
Jawab = D. 200 joule.