如果兩個所受的forces 唔同,那acceleration 又點會同呢???
雖然你的講法行得通,但如果以Newton's second law 去諗,我又覺得行唔通因為acceleration is directly proportional to the force
如果兩個所受的forces 唔同,那acceleration 又點會同呢???
我終於明la!!^_^多謝各位的回答!
如果a=2 kg
b=3kg
當a,b release from rest (無air resistance) ,書就話佢地的velocity & acceleration 係一樣,但佢地的mg 都唔同,咁velocity & acceleration 點會係一樣????
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