ĐỀ KIỂM TRA HKI MÔN VẬT LÝ 10 NĂM 2015


 !"# 
$%" &'()*+,%--(./0 +,1
 !2
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>+?@#!$%&' ()*+,-.
/0-1(2345
6
/78/
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#=6A=>? <, -F "' (CB.(D E>,
<!$ ( (' (C/
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B #<GH.I? )
0
l
2J4/K;.&<!$ (
3
2644(8<GHL
+/M(2345
6
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E7 C (<GH/
?E# <GH.IN4&O ?P (8%;.&<!$ (
6
?P (? 
B #?> H;<Q.?> & R4@1I!$3644G ( (S( 6D/M
π = 3,14
/

E78&TU) (./
?E7   ?> H;@% (!S (H;,1!$&1 
 (J4/
B A#'V' (,1WRN&5 !S (X ( P ( (8A>1UH;G 
!$344 Y8* (X /M(2345
6
/
E7 (S( 1  (H;*<DA>1" &* (X /
?E7 Z>(YH;!S (/
E"<&[ (?P (J\] (<!$ (8H; 1  ( !" 
D

 !"# 
$%" &'()*+,%--(./0 +,1
 !2B
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#=6 !" 
>+?@#!$%&' ()*+,-.
/0-1(2345
6
/78/
#=69  (:; </=>?@1A; <B&' (1)' (CDE
#=6A=>? <, -F "' (CB.(D E>,
<!$ ( (' (C/
B B '+9C:-;/<
B #<GH.I? )
0
l
2N4/K;.&<!$ (

3
2644(8<GHL
+/M(2345
6
/
E7 C (<GH/
?E# <GH.I^4&O ?P (8%;.&<!$ (
6
?P (? 
B #?> H;<Q.?> & R4@1I!$N44G ( (S( 3D/M
π = 3,14
/
E78&TU) (./
?E7   ?> H;@% (!S (H;,1!$&1 
 (J4/
B A#'V' (,1WRN&5 !S (X ( P ( (8A>1UH;G 
!$344 Y8* (X /M(2345
6
/
E7 (S( 1  (H;*<DA>1" &* (X /
?E7 Z>(YH;!S (/
E"<&[ (?P (J\] (<!$ (8H; 1  ( !" 
D
A
 !"# !>">
$%" &'(),E-,%--+,1
!2

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0
l
2J4/K;.&<!$ (
3
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/
E7 C (<GH/
?E# <GH.IN4&O ?P (8%;.&<!$ (
6
?P (? 
/_
∆ =
1
k. m .gl

_
= = =
1
m .g

0,2.10
k 50N / m
k 0,04
?/_
− =
0 2
k.( ) m .gl l

_
−
−
= = =
0
2
k( )
50.(0,6 0,5)
m 0,5kg
g 10
l l
F:
FT:
F:
FT:
B #?> H;<Q.?> & R4@1I3644G ( (S( 6D/M
π = 3,14
/
E78&TU) (./
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/_

= = =
t 120
T 0,1s
N 1200
_
π
ω = = =
2 2.3,14
62,8rad / s
T 0,1
?/_
= ω = =v .R 62,8.0,3 18,84m / s
_
= = =S v.t 18,84.50 942m
F:
F:
F:
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!$344 Y8* (X /M(2345
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/
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?/7 Z>(YH;!S (/
/"<&[ (?P (J\] (<!$ (8H; 1  ( !" 
/_
= −
2 2
0
2aS v v


⇒
−
−
= = = −
2 2
2
2
0
v v
10
a 0,5m / s
2S 2.100
_
−
−
= = =
−
0
v v
10
t 20s
a 0,5
?/_
−µ =mg ma
⇒

− −
µ = = =
a 0,5

0,05
g 10
/_
− =5%mg 0,05mg 0

⇒

=a 0
H;1  (X (I/
F:
F:
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$%" &'(),E-,%--+,1

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
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!W/
_
a7,b (  -c() -U]Wb ((/

a7,> &>  7>9-U(&> /
>+?@ 3
= = =
2 2
1
h gt 5.4 80m
2
_
= = =v g.t 10.4 40m / s
F:
F:
F:
F:3
#=6G,,6E?HI-8
• 01  (X (  ) IUF:
• .! (X (C (UI* H (!W/:1JK5F:
•
= = =
2 2
1
h gt 5.4 80m
2
:1JKJ&,LJM.I8N6K5F:
•
= = =v g.t 10.4 40m / s
:1JKJ&,LJM.I8N6K5F:
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k. m .gl
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m .g
0,2.10
k 50N / m
k 0,04
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k.( ) m .gl l
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−
−
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g 10
l l
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N 600
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ω = = =
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0
2aS v v

⇒
−
−
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2 2
2
2
0

v v
10
a 0,5m / s
2S 2.100
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−
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−
0
v v
10
t 20s
a 0,5
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⇒
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0,05
g 10
/_
− =5%mg 0,05mg 0
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⇒
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