87,88&8-9不要求
8-7, 8-8 & 8-9 不要求
Chapter 9: Linear Momentum and collisions p200-233
Chapter 9: Linear Momentum and Collisions p200-233
and Conservation of Momentum p200-p20f 9-1&9-2 Momentum and its relation of ford linear momentum P=mv dP net dt Conservation of linear momentum F=0 constant vector net F=0→∑m)=P=常量 F=0→∑mun)=P=常量 F=0→Cmu2)=P=常量
linear momentum P = mv dt dP Fnet = Conservation of linear momentum Fnet = 0 P = constant vector ( ) ( ) ( ) 常量 常量 常量 = = = = = = = = = z i iz z y i iy y x i ix x F m P F m P F m P v v v 0 0 0 9-1& 9-2 Momentum and Its Relation of Force and Conservation of Momentum p200-p205
9-3 Impulse and Collisions P205-208 Impulse-Momentum Theorem ext Ma dp d =,(m) dt dt P=m- Momentun(动量 Fd=4,…∷F=mp=一=4 =Fd- The impulse冲量) of force J=AP=Pr-PlImpulse-Momentum Theorem
Impulse-Momentum Theorem: ( ) ext mv dt d dt dP F Ma = = = Fdt dp, = Fdt dp p f pi p p p t t f i f i = = − = = f i t t J Fdt —– The impulse(冲量)of force P mv = —– Momentum (动量) J P Pf Pi Impulse-Momentum Theorem = = − 9-3 Impulse and Collisions P205-208
J=△B=P P fx =△P=P-P J2=△P=P- 9-4,9-5,9-6p208-212了解 9-79-8,99&9-10p213-223不要求
x Px Pf x Pi x J = = − y Py Pf y Pi y J = = − z Pz Pf z Pi z J = = − 9-4, 9-5, 9-6 p208-212了解 9-7 9-8, 9-9 & 9-10 p213-223 不要求