锟斤拷锟斤拷1.锟斤拷锟斤拷锟酵沖锟斤拷

锟斤拷锟斤拷(1)锟斤拷锟斤拷锟斤拷锟絓锟斤拷锟斤拷锟絯锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷锟劫度的乘積锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷p=mv锟斤拷锟斤拷矢锟斤拷锟斤拷锟斤拷锟斤拷锟絚v锟侥凤拷锟斤拷锟斤拷同锟斤拷锟缴傦拷锟斤拷锟斤拷锟斤拷同锟斤拷锟斤拷谴锟叫★拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷

锟斤拷锟斤拷(2)锟絖锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫時锟絞锟侥乘積锟斤拷锟斤拷該锟斤拷锟侥沖锟斤拷锟斤拷锟斤拷I=Ft锟斤拷锟絖锟斤拷也锟斤拷矢锟斤拷锟斤拷锟斤拷锟侥凤拷锟斤拷锟斤拷锟斤拷锟侥凤拷锟斤拷Q锟斤拷锟斤拷

锟斤拷锟斤拷2.锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟絯锟斤拷锟杰猴拷锟斤拷锟斤拷锟侥沖锟斤拷锟斤拷锟斤拷锟斤拷锟侥勶拷锟斤拷锟斤拷變锟斤拷锟斤拷锟斤拷锟絖式锟斤拷Ft=p′-p锟斤拷Ft=mv′-mv

锟斤拷锟斤拷(1)锟斤拷锟斤拷锟斤拷式锟斤拷一矢锟斤拷式锟斤拷锟絓锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絵锟絩要锟截別注锟斤拷_锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷變锟斤拷锟斤拷锟侥凤拷锟斤拷锟斤拷

锟斤拷锟斤拷(2)锟斤拷式锟叫碉拷F锟斤拷锟叫撅拷锟斤拷锟斤拷锟斤拷锟杰的帮拷锟斤拷锟斤拷锟斤拷锟节冿拷(n锟斤拷i)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥猴拷锟斤拷锟斤拷

锟斤拷锟斤拷(3)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫撅拷锟斤拷锟斤拷锟斤拷锟斤拷菃蝹锟斤拷锟斤拷w锟斤拷也锟斤拷锟斤拷锟斤拷锟斤拷锟絯系锟統(t锟斤拷ng)锟斤拷锟斤拷锟斤拷锟絯系锟統(t锟斤拷ng)锟斤拷只锟斤拷锟斤拷锟较碉拷y(t锟斤拷ng)锟杰碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟截匡拷锟絔系锟統(t锟斤拷ng)锟斤拷(n锟斤拷i)锟斤拷锟斤拷系锟統(t锟斤拷ng)锟斤拷(n锟斤拷i)锟斤拷锟斤拷锟斤拷锟矫诧拷锟斤拷變锟斤拷锟斤拷系锟統(t锟斤拷ng)锟侥匡拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷(4)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟紿锟絤锟斤拷锟节恒定锟斤拷锟斤拷锟斤拷也锟絤锟斤拷锟斤拷锟絊锟絩锟絞變锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷變锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫碉拷锟斤拷F锟斤拷(y锟斤拷ng)锟斤拷(d锟斤拷ng)锟斤拷锟斤拷锟阶冿拷锟斤拷锟斤拷锟斤拷脮r锟絞锟斤拷(n锟斤拷i)锟斤拷平锟斤拷值锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷3.锟斤拷锟斤拷锟截恒定锟缴ｏ拷

锟斤拷锟斤拷一锟斤拷系锟統(t锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷之锟酵烇拷锟姐，锟紷锟斤拷系锟統(t锟斤拷ng)锟侥匡拷锟斤拷锟斤拷锟斤拷锟街诧拷變锟斤拷

锟斤拷锟斤拷锟斤拷锟絖式锟斤拷m1v1+m2v2=m1v1′+m2v2′

锟斤拷锟斤拷(1)锟斤拷锟斤拷锟截恒定锟缴筹拷锟斤拷锟侥條锟斤拷

锟斤拷锟�锟斤拷锟较碉拷y(t锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟侥猴拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟斤拷锟杰碉拷锟斤拷锟斤拷锟侥猴拷锟斤拷锟絤锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟斤拷锟斤拷锟饺冿拷(n锟斤拷i)锟斤拷小锟矫多，锟斤拷锟斤拷撞锟斤拷锟絵锟叫碉拷摩锟斤拷锟斤拷锟斤拷锟斤拷炸锟絕锟斤拷锟叫碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟洁互锟斤拷锟矫的冿拷(n锟斤拷i)锟斤拷锟斤拷小锟矫多，锟斤拷锟皆猴拷锟皆诧拷計锟斤拷

锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟侥猴拷锟斤拷锟絤锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷某锟斤拷锟斤拷锟斤拷锟较的凤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絫锟斤拷該锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟侥匡拷锟斤拷锟斤拷锟侥凤拷锟斤拷锟斤拷锟街诧拷變锟斤拷

锟斤拷锟斤拷(2)锟斤拷锟斤拷锟截猴拷锟斤拷俣染锟斤拷锟�“锟斤拷锟斤拷”锟斤拷锟斤拷矢锟斤拷锟斤拷;锟斤拷瞬锟絩锟斤拷;锟斤拷锟斤拷锟斤拷锟斤拷;锟斤拷锟斤拷锟絤锟斤拷锟斤拷

锟斤拷锟斤拷4.锟斤拷炸锟絚锟斤拷撞

锟斤拷锟斤拷(1)锟斤拷炸锟斤拷锟斤拷撞類嗭拷锟絵锟侥癸拷同锟斤拷锟絚锟斤拷锟斤拷锟絯锟絞锟斤拷锟洁互锟斤拷锟斤拷突然锟絣(f锟斤拷)锟斤拷锟斤拷锟斤拷锟矫時锟絞锟杰短ｏ拷锟斤拷锟斤拷锟斤拷锟杰达拷锟斤拷锟斤拷锟絟锟斤拷锟斤拷系锟統(t锟斤拷ng)锟杰碉拷锟斤拷锟斤拷锟斤拷锟绞匡拷锟矫勶拷锟斤拷锟截恒定锟缴侊拷處锟斤拷锟斤拷

锟斤拷锟斤拷(2)锟节憋拷炸锟絕锟斤拷锟叫ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟斤拷锟�锟斤拷系锟統(t锟斤拷ng)锟侥勶拷锟杰憋拷炸锟斤拷锟斤拷锟斤拷锟�锟斤拷锟斤拷锟斤拷撞锟絕锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟侥匡拷锟斤拷锟杰诧拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟絧锟劫讹拷锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟�(n锟斤拷i)锟斤拷锟斤拷

锟斤拷锟斤拷(3)锟斤拷锟节憋拷炸锟斤拷锟斤拷撞類嗭拷锟絵锟斤拷锟矫時锟絞锟杰讹拷锟斤拷锟斤拷锟斤拷锟絕锟斤拷锟斤拷锟斤拷锟絯锟斤拷位锟狡猴拷小锟斤拷一锟斤拷珊锟斤拷圆锟接嬶拷锟斤拷锟斤拷园锟斤拷锟斤拷锟斤拷^锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟诫化锟絕锟教猴拷锟斤拷處锟斤拷锟斤拷锟斤拷锟斤拷锟矫猴拷還锟斤拷锟斤拷锟斤拷前瞬锟絞锟斤拷位锟斤拷锟斤拷锟铰的勶拷锟斤拷锟絖始锟絓锟斤拷锟斤拷

锟斤拷锟斤拷5.锟斤拷锟絖锟紽(xi锟斤拷n)锟斤拷

锟斤拷锟斤拷锟斤拷锟絖锟紽(xi锟斤拷n)锟斤拷锟斤拷指锟斤拷系锟統(t锟斤拷ng)锟斤拷(n锟斤拷i)锟斤拷锟斤拷锟斤拷锟铰ｏ拷系锟統(t锟斤拷ng)锟斤拷(n锟斤拷i)一锟斤拷锟斤拷锟斤拷锟絯锟斤拷某锟斤拷锟斤拷l(f锟斤拷)锟斤拷锟斤拷锟斤拷變锟斤拷锟絩锟斤拷系锟統(t锟斤拷ng)锟斤拷(n锟斤拷i)锟斤拷锟洁部锟斤拷锟斤拷锟絯锟斤拷锟洁反锟侥凤拷锟斤拷l(f锟斤拷)锟斤拷锟斤拷锟斤拷變锟斤拷锟侥現(xi锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷式锟絯锟紺锟斤拷锟斤拷锟斤拷榷锟斤拷锟斤拷锟斤拷梅锟斤拷_锟絓锟接的岋拷锟斤拷锟斤拷锟紷然锟斤拷锟节凤拷锟絖锟紽(xi锟斤拷n)锟斤拷锟斤拷锟斤拷系锟統(t锟斤拷ng)锟侥勶拷锟斤拷锟斤拷锟截猴拷摹锟�

锟斤拷锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絔锟斤拷

       锟竭讹拷锟斤拷锟斤拷锟�(f锟斤拷)锟斤拷(x锟斤拷)锟斤拷锟斤拷锟絉锟斤拷

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟竭★拷锟斤拷前锟绞傦拷锟斤拷志愿锟斤拷锟斤拷取锟街旓拷(sh锟斤拷)锟斤拷锟斤拷

锟竭匡拷锟絩锟絞锟斤拷锟斤拷全锟斤拷锟斤拷要锟斤拷(ji锟斤拷)锟絚

锟組锟斤拷"锟竭匡拷锟絎(w锟斤拷ng)"微锟脚癸拷锟斤拷號