TRƯỜNG THPT BÙI THỊ XUÂN T: VẬT LÍ – CNCN KIỂM TRA ĐỊNH KỲ-HKII-NH 14-15 MÔN: VẬT LÍ – L$P 10 – CTC Thời gian làm bài:45 phút  I - LÝ THUYẾT Câu 1 (1,5 điểm)  ! Câu 2 (1,5 điểm) "#$%&'($)*!+ Câu 3 (1,0 điểm) ,-./01234/015-6$78,9 II - BÀI TẬP B.i 1 (1,5 điểm) :$&;+<./=> ? @A8B+(C$5>D1+> E F< ? @G>H I>&;+<./=> J @A8K+( I>8L%-(C$MF<,F<&  I> B.i 2 (2,5điểm) ,N$-B> ->D!8/0O>1.->$F;+<./=?+ F<P.?A>H QR '++!(@?A>H J , 9ST&P$-UI>FI/= ->D! &9F<F>I;$T&V&<.PT K(2,0 điểm) :$./=+.W/X;C?A.86$JY A S8E !K?A B Z&[R -I 9[168E !\?A B Z,C+.L(.&-2 &9;/0&[16$BY A S,E ! M+ ]]]]]]]]]]]]]]]]]^,]]]]]]]]]]]]]]]] ĐÁP ÁN VÀ THANG ĐIỂM  CÂU NỘI DUNG ĐIỂM S)? ?8B ]S_@` - a ]b.c7d9 ]S ! A P t = ]b !.-E7e9 A8B A8JB A8B A8JB S)J ?8B ]S!+/=!I-NE)*5538;+/5!Q -+-'E #L8 ]SE)*(C$f I+Ng(C$(h6 $!+- ]i(C$f IE)*+I>-I>-&h )(5E !.&h A8B A8B A8B S)K ?8A ]b/0&C%j U&E !k-6$+C+[. /01 ]3h A8B A8B ? ?8B ]Sl%/.l(C$F!5/+I> ]b$./=65/+I> ? ? A hê p m v= + r r r  ]b$./=6 I> m ? J 7 9 hê p m m v= + r r ]h&QR> E86FI>5>D1.6+8E%n .F&'--$./=; m ? ? ? J 7 9 hê hê p p m v m m v= ⇔ = + r r r r ]S.l%/ ? ? ? ? ? J ? J A8BG 7 9 A8B A8K m v m v m m v v m m = + ⇒ = = + + @J8B>H A8JB A8JB A8JB A8YB J J8B ]S><TI>D! 9ST&PFe ? @> ? o J ? ? J mv @??ABo ? J ??A J @?AAd ],I5F.-!8TFe J @> J oA ]p%nb,Te ? @e J  ⇔ e ? @> J  ? J ?AA ??A W h mg ⇒ = = @?A> A8JB A8B A8JB A8YB &9,I5e   @Ge  8TFe K @e  oe  @e  o ? G e  @ J J K K B ? B  G J q mv mv= p%nb,Te ? @e K  ⇔ e ? @ J K B q mv   ? q q?AA G ?A B B? W v m ⇒ = = = ≈ ?J8\B>H A8JB A8JB A8JB K J8A ,5IE?,5IEJ,5IEK  ? @?Al  J @2 K @ J  ? @K?A B Z J @K?A B Z K @2 , ? @JYoJYK@KAAi, J @, ? , K  @BYoJYK@KKAi 9p%n.F.r:5< ? ? J J    = B ? J ? B J  K?A   ?A  \?A ⇒ = = @Bl A8B A8YB &9p%n.FE. K J J K   , , = B K K J J , KKA   \?A , KAA ⇒ = = @\8\?A B Z A8YB o +-D s5N>$.PA8JB->$&-E o 'k-/E+E8L-C>< o &CL/( < -t <C>);i&Ch +-C> . TRƯỜNG THPT BÙI THỊ XUÂN T: VẬT LÍ – CNCN KIỂM TRA ĐỊNH KỲ-HKII-NH 14-15 MÔN: VẬT LÍ – L$P 10 – CTC Thời gian làm bài:45 phút  I. phút  I - LÝ THUYẾT Câu 1 (1,5 điểm)  ! Câu 2 (1,5 điểm) "#$%&'($)*!+ Câu. I>&;+<./=> J @A8K+( I>8L%-(C$MF<,F<&  I> B.i 2 (2, 5điểm) ,N$-B> ->D!8/0O>1.->$F;+<./=?+ F<P.?A>H