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In chapters 2 and 4 we have studied “kinematics” i.e. described the motion of objects using parameters such as the position vector, velocity and acceleration without any insights as to what caused the motion. This is the task of chapters 5 and 6 in which the part of mechanics known as “dynamics” will be developed. In this chapter we will introduce Newton’s three laws of motion which is at the heart of classical mechanics.

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In this chapter we will continue to study the motion of objects without the restriction we put in chapter 2 to move along a straight line. Instead we will consider motion in a plane (two dimensional motion) and motion in space (three dimensional motion)

16p kieucongviet 24-12-2009 132 17   Download

In Physics we have parameters that can be completely described by a number and are known as “scalars” .Temperature, and mass are such parameters Other physical parameters require additional information about direction and are known as “vectors” . Examples of vectors are displacement, velocity and acceleration.

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Các câu hình học tổng hợp liên quan đến thể tích khối đa diện được chọn lọc từ các đề thi đại học các năm qua ( cả dự bị)

5p deltan 20-10-2009 1359 529   Download