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แบบฝึกหัดหน่วยที่ 4
คําชี้แจง จงตอบคําถามต่อไปนี้ให้ถูกต้อง
1.แรงในทางฟิสิกส์หมายถึงอะไร
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2.ผลที่เกิดจากการกระทําของแรงก่อให้เกิดผลกับวัตถุอย่างไรบ้าง
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3.อธิบายลักษณะสําคัญของแรงต่างๆ ต่อไปนี้
3.1 แรงดึง
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3.2 แรงอัด
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3.3 แรงบิด
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3.4 แรงเฉือน
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4. ผู้ค้นพบกฏแรงโน้มถ่วงของโลกคือใคร
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