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Verified answer
W=f.sw=(50+70).4
w=120.4
w=480J
F2= 70 N
s = 4 m
Usaha oleh Andi
W1 = F1 × s
= 50 × 4
= 200 N
Usaha oleh toni
W2 = F2 × s
=70 × 4
= 280 N