璇曞嵎绗?/p>
1
椤碉紝鎬?/p>
6
椤?/p>
鐧惧己鏍￠珮鑰冪墿鐞嗛鍨嬪涔犱笓棰?/p>
33
锛氬姩閲忓拰鑳介噺鐨勭患鍚堝簲鐢?/p>
瀛︽牎
:___________
濮撳悕锛?/p>
___________
鐝骇锛?/p>
___________
鑰冨彿锛?/p>
___________
璇勫嵎浜?/p>
寰楀垎
涓�銆佸崟閫夐
1
锛庝袱鐗╁潡
A
銆?/p>
B
鐢ㄨ交寮圭哀鐩歌繛锛岃川閲忓潎涓?/p>
2kg
锛屽垵濮嬫椂寮圭哀澶勪簬鍘熼暱锛?/p>
A
銆?/p>
B
涓ょ墿鍧楅兘
浠?/p>
v
锛?/p>
6 m/s
鐨勯�熷害鍦ㄥ厜婊戠殑姘村钩鍦伴潰涓婅繍鍔紝璐ㄩ噺
4kg
鐨勭墿鍧?/p>
C
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绀猴紝
B
涓?/p>
C
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鍒欎笅鍒楄娉曟纭殑鏄?/p>
(
)
A
锛?/p>
B
銆?/p>
C
纰版挒鍒氱粨鏉熸椂
BC
鐨勫叡鍚岄�熷害涓?/p>
3 m/s
B
锛庡脊绨х殑寮规�у娍鑳芥渶澶ф椂锛岀墿鍧?/p>
A
鐨勯�熷害涓?/p>
3 m/s
C
锛庡脊绨х殑寮规�у娍鑳芥渶澶у�间负
36J
D
锛庡脊绨у啀娆℃仮澶嶅師闀挎椂
A
銆?/p>
B
銆?/p>
C
涓夌墿鍧楅�熷害鐩稿悓
2
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m
1
銆?/p>
m
2
鐨勪袱鐗╁潡
A
銆?/p>
B
鐩歌繛鎺ワ紝骞堕潤姝?/p>
鍦ㄥ厜婊戞按骞抽潰涓娿�傜幇浣?/p>
A
鑾峰緱姘村钩鍚戝彸銆佸ぇ灏忎负
3m/s
鐨勭灛鏃堕�熷害锛屼粠姝ゅ埢寮�濮嬭鏃讹紝
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A
锛庡湪
t
1
鍜?/p>
t
3
鏃跺埢涓ょ墿鍧楄揪鍒板叡鍚岄�熷害
1m/s
锛屼笖寮圭哀閮藉浜庡帇缂╃姸鎬?/p>
B
锛庡湪
t
1
~t
2
鏃堕棿鍐?/p>
A
銆?/p>
B
鐨勮窛绂婚�愭笎澧炲ぇ锛?/p>
t
2
鏃跺埢寮圭哀鐨勫脊鎬у娍鑳芥渶澶?/p>
C
锛庝袱鐗╀綋鐨勮川閲忎箣姣斾负
m
1
锛?/p>
m
2
=2
锛?/p>
1
D
锛庡湪
t
2
鏃跺埢
A
銆?/p>
B
涓ょ墿鍧楃殑鍔ㄨ兘涔嬫瘮涓?/p>
E
k1
锛?/p>
E
k2
=1
锛?/p>
8
璇勫嵎浜?/p>
寰楀垎
浜屻�佸閫夐
3
锛庡湪鍏夋粦鐨勬按骞抽潰涓婏紝璐ㄩ噺涓?/p>
m
鐨勫瓙寮逛互鍒濋�熷害
v
0
灏勫嚮璐ㄩ噺涓?/p>
M
鐨勬湪鍧楋紝鏈�缁堝瓙寮?/p>
鏈兘灏勭┛鏈ㄥ潡锛屽皠鍏ョ殑娣卞害涓?/p>
d
锛屾湪鍧楀湪鍔犻�熻繍鍔ㄤ腑鐨勪綅绉讳负
s
銆傚垯浠ヤ笅璇存硶姝ｇ‘鐨勬槸