Jawabanmu

2014-07-02T13:47:07+07:00
F= m.a.... Jika masanya sama berarti F1/a1: F2/a2..maka didapat a2 : 4 m.s^-2
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2014-07-02T14:13:41+07:00
F=m.a

F₁/F₂=a₁/a₂
20/40=2/a₂
a₂=2.2
a₂= 4 m/s²

:)
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