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W = 617,4 j
v = 4,2m/s
Dit : m = ?
Penyelesaian :
Caranya bisa pakai rumus
W = ΔEk
W = 1/2·m·v²
617,4 = 1/2 · m · (4,2)²
617,4 = 1/2 · m · 17,64
617,4 = 8,82·m
m =
m = 70 Kg
Jadi, massa anton dan sepeda sebesar 70 kg