锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷全 锟斤拷锟斤拷锟竭凤拷锟截硷拷

锟斤拷锟叫時(sh锟斤拷)锟斤拷锟絰锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷同锟絎(xu锟斤拷)锟斤拷要抓锟給锟絩(sh锟斤拷)锟絞锟斤拷锟斤拷锟斤拷W(xu锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟角革拷锟叫幾匡拷锟斤拷锟斤拷锟統锟斤拷锟斤拷锟斤拷锟剿庯拷锟斤拷锟斤拷覍W(xu锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷小锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷赂锟斤拷锟斤拷锟斤拷锟斤拷锟绞斤拷锟饺�锟斤拷希锟斤拷锟杰岋拷(du锟斤拷)锟斤拷锟斤拷袔锟斤拷锟�!

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷全之锟斤拷式篇

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟缴★拷锟斤拷式锟斤拷

一锟斤拷锟絴(zh锟斤拷)锟絚(di锟斤拷n)锟斤拷锟絓(y锟斤拷n)锟斤拷(d锟斤拷ng)(1)------直锟斤拷锟絓(y锟斤拷n)锟斤拷(d锟斤拷ng)

1)锟斤拷變锟斤拷直锟斤拷锟絓(y锟斤拷n)锟斤拷(d锟斤拷ng)

1.平锟斤拷锟劫讹拷V平=s/t(锟斤拷锟絰式) 2.锟斤拷锟斤拷锟斤拷論Vt2-Vo2=2as

3.锟斤拷锟絞锟絩(sh锟斤拷)锟斤拷锟劫讹拷Vt/2=V平=(Vt+Vo)/2 4.末锟劫讹拷Vt=Vo+at

5.锟斤拷锟絞位锟斤拷锟劫讹拷Vs/2=[(Vo2+Vt2)/2]1/2 6.位锟斤拷s=V平t=Vot+at2/2=Vt/2t

7.锟斤拷锟劫讹拷a=(Vt-Vo)/t {锟斤拷Vo锟斤拷锟斤拷锟斤拷锟斤拷a锟絚Vo同锟斤拷(锟斤拷锟斤拷)a>0;锟斤拷锟斤拷ta<0锟斤拷

8.锟斤拷(sh锟斤拷)锟�(y锟斤拷n)锟斤拷锟斤拷論Δs=aT2 {Δs锟斤拷锟紹锟絤(x锟斤拷)锟斤拷锟斤拷锟斤拷葧r(sh锟斤拷)锟絞(T)锟斤拷(n锟斤拷i)位锟斤拷之锟斤拷锟�

9.锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷位:锟斤拷锟劫讹拷(Vo):m/s;锟斤拷锟劫讹拷(a):m/s2;末锟劫讹拷(Vt):m/s;锟絩(sh锟斤拷)锟絞(t)锟斤拷(s);位锟斤拷(s):锟斤拷(m);路锟斤拷:锟斤拷;锟劫度嗭拷位锟絈锟姐：1m/s=3.6km/h锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷全之锟斤拷篇

1)锟斤拷見(ji锟斤拷n)锟斤拷锟斤拷

1.锟斤拷锟斤拷G=mg (锟斤拷锟斤拷锟絈直锟斤拷锟铰ｏ拷锟斤拷锟斤拷锟絚(di锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟絤锟斤拷锟节碉拷锟斤拷锟斤拷娓斤拷锟�)

2.锟斤拷锟剿讹拷锟斤拷F=kx {锟斤拷锟斤拷锟截恢忥拷(f锟斤拷)锟斤拷變锟斤拷锟斤拷k锟斤拷锟脚讹拷系锟斤拷(sh锟斤拷)(N/m)锟斤拷x锟斤拷锟斤拷變锟斤拷(m)锟斤拷

3.锟斤拷锟斤拷(d锟斤拷ng)摩锟斤拷锟斤拷F=μFN{锟絚锟斤拷锟絯锟斤拷锟斤拷(du锟斤拷)锟絓(y锟斤拷n)锟斤拷(d锟斤拷ng)锟斤拷锟斤拷锟洁反锟斤拷μ锟斤拷摩锟斤拷锟斤拷(sh锟斤拷)锟斤拷F(xi锟斤拷n)N锟斤拷锟斤拷锟斤拷锟斤拷(N)锟斤拷

4.锟給摩锟斤拷锟斤拷0≤f锟給≤fm(锟絚锟斤拷锟絯锟斤拷锟斤拷(du锟斤拷)锟絓(y锟斤拷n)锟斤拷(d锟斤拷ng)趨锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟洁反锟斤拷fm锟斤拷锟斤拷锟斤拷o摩锟斤拷锟斤拷)

5.锟絝(w锟斤拷n)锟斤拷锟斤拷锟斤拷F=Gm1m2/r2(G=6.67×10-11Nm2/kg2,锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟紹锟斤拷锟斤拷)

6.锟給锟斤拷锟紽=kQ1Q2/r2(k=9.0×109Nm2/C2,锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟紹锟斤拷锟斤拷)

7.電堬拷(ch锟斤拷ng)锟斤拷F=Eq (E锟斤拷锟斤拷(ch锟斤拷ng)锟斤拷(qi锟斤拷ng)N/C锟斤拷q锟斤拷锟斤拷锟紺锟斤拷锟斤拷電猴拷锟杰碉拷電堬拷(ch锟斤拷ng)锟斤拷锟絚锟斤拷(ch锟斤拷ng)锟斤拷(qi锟斤拷ng)锟斤拷锟斤拷锟斤拷同)

8.锟斤拷锟斤拷锟斤拷F=BILsinθ (θ锟斤拷B锟絚L锟侥夾锟斤拷锟斤拷锟斤拷(d锟斤拷ng)L⊥B锟絩(sh锟斤拷):F=BIL锟斤拷B//L锟絩(sh锟斤拷):F=0)

9.锟斤拷锟狡濓拷锟絝=qVBsinθ (θ锟斤拷B锟絚V锟侥夾锟角ｏ拷锟斤拷(d锟斤拷ng)V⊥B锟絩(sh锟斤拷)锟斤拷f=qVB锟斤拷V//B锟絩(sh锟斤拷):f=0)

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷全之锟斤拷锟斤拷锟斤拷(锟斤拷锟斤拷锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷)

1.锟斤拷锟斤拷W=Fscosα(锟斤拷锟絰式){W:锟斤拷(J)锟斤拷F(xi锟斤拷n):锟斤拷锟斤拷(N)锟斤拷s:位锟斤拷(m)锟斤拷α:F锟斤拷s锟絞锟侥夾锟角ｏ拷

2.锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷Wab=mghab {m:锟斤拷锟絯锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷g=9.8m/s2≈10m/s2锟斤拷hab锟斤拷a锟絚b锟竭度诧拷(hab=ha-hb)}

3.電堬拷(ch锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷Wab=qUab {q:锟斤拷锟�(C)锟斤拷Uab:a锟絚b之锟絞電勶拷(sh锟斤拷)锟斤拷(V)锟斤拷Uab=φa-φb锟斤拷

4.電癸拷锟斤拷W=UIt(锟斤拷锟絤式) {U锟斤拷電夛拷(V)锟斤拷I:锟斤拷锟�(A)锟斤拷t:通電時(sh锟斤拷)锟絞(s)锟斤拷

5.锟斤拷锟绞ｏ拷P=W/t(锟斤拷锟絰式) {P:锟斤拷锟斤拷[锟斤拷(W)]锟斤拷W:t锟絩(sh锟斤拷)锟絞锟斤拷(n锟斤拷i)锟斤拷锟斤拷锟侥癸拷(J)锟斤拷t:锟斤拷锟斤拷锟斤拷锟矫時(sh锟斤拷)锟絞(s)锟斤拷

6.锟斤拷車(ch锟斤拷)锟斤拷锟斤拷锟斤拷锟侥癸拷锟绞ｏ拷P=Fv;P平=Fv平 {P:瞬锟絩(sh锟斤拷)锟斤拷锟斤拷锟斤拷P平:平锟斤拷锟斤拷锟斤拷}

7.锟斤拷車(ch锟斤拷)锟皆恒定锟斤拷锟绞嗭拷锟斤拷(d锟斤拷ng)锟斤拷锟皆恒定锟斤拷锟劫度嗭拷锟斤拷(d锟斤拷ng)锟斤拷锟斤拷車(ch锟斤拷)锟斤拷锟斤拷锟斤拷锟劫讹拷(vmax=P锟絶/f)

8.電癸拷锟绞ｏ拷P=UI(锟斤拷锟絤式) {U锟斤拷锟铰冯妷锟�(V)锟斤拷I锟斤拷锟铰凤拷锟斤拷(A)锟斤拷

9.锟斤拷锟斤拷锟斤拷锟缴ｏ拷Q=I2Rt {Q:電燂拷(J)锟斤拷I:锟斤拷锟斤拷锟�(qi锟斤拷ng)锟斤拷(A)锟斤拷R:锟斤拷锟街�(Ω)锟斤拷t:通電時(sh锟斤拷)锟絞(s)锟斤拷

10.锟斤拷锟斤拷锟斤拷路锟斤拷I=U/R;P=UI=U2/R=I2R;Q=W=UIt=U2t/R=I2Rt

11.锟斤拷(d锟斤拷ng)锟杰ｏ拷Ek=mv2/2 {Ek:锟斤拷(d锟斤拷ng)锟斤拷(J)锟斤拷m锟斤拷锟斤拷锟絯锟絴(zh锟斤拷)锟斤拷(kg)锟斤拷v:锟斤拷锟絯瞬锟絩(sh锟斤拷)锟劫讹拷(m/s)锟斤拷

12.锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟杰ｏ拷EP=mgh {EP :锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟斤拷(J)锟斤拷g:锟斤拷锟斤拷锟斤拷锟劫度ｏ拷h:锟絈直锟竭讹拷(m)(锟斤拷锟斤拷锟�(sh锟斤拷)锟斤拷锟斤拷锟斤拷)锟斤拷

13.電勶拷(sh锟斤拷)锟杰ｏ拷EA=qφA {EA:锟斤拷锟斤拷w锟斤拷A锟絚(di锟斤拷n)锟斤拷電勶拷(sh锟斤拷)锟斤拷(J)锟斤拷q:锟斤拷锟�(C)锟斤拷φA:A锟絚(di锟斤拷n)锟斤拷電勶拷(sh锟斤拷)(V)(锟斤拷锟斤拷锟�(sh锟斤拷)锟斤拷锟斤拷锟斤拷)锟斤拷

14.锟斤拷(d锟斤拷ng)锟杰讹拷锟斤拷(锟斤拷(du锟斤拷)锟斤拷锟絯锟斤拷锟斤拷锟斤拷,锟斤拷锟絯锟侥勶拷(d锟斤拷ng)锟斤拷锟斤拷锟斤拷)锟斤拷

W锟斤拷=mvt2/2-mvo2/2锟斤拷W锟斤拷=ΔEK

{W锟斤拷:锟斤拷锟斤拷锟斤拷(du锟斤拷)锟斤拷锟絯锟斤拷锟侥匡拷锟斤拷锟斤拷ΔEK:锟斤拷(d锟斤拷ng)锟斤拷變锟斤拷ΔEK=(mvt2/2-mvo2/2)锟斤拷

15.锟紺(j锟斤拷)械锟斤拷锟截恒定锟缴ｏ拷ΔE=0锟斤拷EK1+EP1=EK2+EP2也锟斤拷锟斤拷锟斤拷mv12/2+mgh1=mv22/2+mgh2

16.锟斤拷锟斤拷锟斤拷锟斤拷锟絚锟斤拷锟斤拷锟斤拷(sh锟斤拷)锟杰碉拷變锟斤拷(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斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷負(f锟斤拷)值)WG=-ΔEP

锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絔锟斤拷

锟斤拷锟斤拷锟竭匡拷锟斤拷锟斤拷锟�(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★拷锟斤拷前锟斤拷(zh锟斤拷n)锟斤拷锟斤拷志愿锟斤拷锟�(b锟斤拷o)锟斤拷锟饺★拷锟�?j锟斤拷n)?sh锟斤拷)锟斤拷锟斤拷

锟竭匡拷锟絩(sh锟斤拷)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(di锟斤拷n)

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(h锟斤拷o)