苹南癢掌大 但博学求回新 South chi na Agricul tural Uni versity Chap. 1 Kinematics of particles describing motion of particles 1. Base conception 2. Important conception 3. Discussion of curve motion 4 Relative motionD e p. p h y sic s D e p. p h y sic s D e p. p h y sic s 2 Chap.1 Kinematics of particles ——describing motion of particles 1. Base conception 2. Important conception 3. Discussion of curve motion 4. Relative motion