2019-2020
瀛﹀勾楂樹竴鐗╃悊涓婂鏈熸湡鏈瘯鍗?/p>
涓�銆侀�夋嫨棰?/p>
1
锛庡鍥炬墍绀猴紝娓镐箰鍥殑娓告垙椤圭洰鈥斺�旀棆杞妞咃紝椋炴浠庨潤姝㈠紑濮嬬紦鎱㈣浆鍔紝缁忚繃涓�灏忔鏃堕棿锛屽潗鍦ㄩ妞?/p>
涓婄殑娓稿鐨勮繍鍔ㄥ彲浠ョ湅浣滃寑閫熷渾鍛ㄨ繍鍔ㄣ�傛暣涓缃彲浠ョ畝鍖栦负濡傚浘鎵�绀虹殑妯″瀷銆傚拷鐣ヨ浆鍔ㄤ腑鐨勭┖姘旈樆
鍔涖�傝缁嗙怀涓庣珫鐩存柟鍚戠殑澶硅涓?/p>
飦?/p>
锛屽垯
A
锛庨妞呭彈鍒伴噸鍔涖�佺怀瀛愭媺鍔涘拰鍚戝績鍔涗綔鐢?/p>
B
锛?/p>
飦?/p>
瑙掕秺澶э紝灏忕悆鐨勫悜蹇冨姞閫熷害灏辫秺澶?/p>
C
锛庡彧瑕佺嚎閫熷害瓒冲澶э紝
飦?/p>
瑙掑彲浠ヨ揪鍒?/p>
90
飩?/p>
D
锛庨妞呰繍鍔ㄧ殑鍛ㄦ湡闅忕潃
飦?/p>
瑙掔殑澧楀ぇ鑰屽澶?/p>
2
锛庡鍥炬墍绀烘槸閲囩敤鍔ㄥ姏瀛︽柟娉曟祴閲忕┖闂寸珯璐ㄩ噺鐨勫師鐞嗗浘锛岃嫢宸茬煡椋炶埞璐ㄩ噺涓?/p>
m
1
锛屽叾鎺ㄨ繘鍣ㄧ殑骞冲潎鎺ㄥ姏涓?/p>
F
锛庡湪椋炶埞涓庣┖闂寸珯瀵规帴鍚庯紝鍦ㄦ帹杩涘櫒宸ヤ綔鏃舵祴鍑洪鑸瑰拰绌洪棿绔欎竴璧疯繍鍔ㄧ殑鍔犻�熷害涓?/p>
a
锛屽垯绌洪棿绔欑殑璐ㄩ噺
m
2
涓猴紙
锛?/p>
A
锛?
1
F
m
a
飥?/p>
B
锛?/p>
1
F
m
a
飥?/p>
C
锛?/p>
1
F
m
a
飥?
D
锛?
F
a
3
锛庢苯杞﹀湪姘村钩鍦伴潰涓婂埞杞﹀仛鍖�鍙橀�熺洿绾胯繍鍔紝鍏朵綅绉讳笌鏃堕棿鐨勫叧绯绘槸锛?/p>
s=24t
锕?/p>
6t
2
锛?/p>
m
锛夛紝鍒欏畠鍦?/p>
3s
鍐?/p>
鐨勫钩鍧囬�熷害涓猴紙
锛?/p>
A
锛?/p>
12m/s B
锛?/p>
10m/s C
锛?/p>
8m/s D
锛?/p>
6m/s
4
锛庝笅鍒楄娉曟纭殑鏄?/p>
A
锛庡姏鏄墿浣撳鐗╀綋鐨勭浉浜掍綔鐢紝鎵�浠ュ姏鎬绘槸鎴愬鍑虹幇鐨?/p>
B
锛庢闈㈠鐗╀綋鐨勬敮鎸佸姏鏄敱浜庣墿浣撳彂鐢熷舰鍙樿�屼骇鐢熺殑
C
锛庨噸鍔涚殑鏂瑰悜鎬绘槸绔栫洿鍚戜笅鐨勶紝鎵�浠ラ噸鍔涙柟鍚戜竴瀹氫笌鍦伴潰鍨傜洿
D
锛庢粦鍔ㄦ懇鎿﹀姏鎬绘槸闃荤鐗╀綋闂寸殑鐩稿杩愬姩锛屽洜姝ゆ粦鍔ㄦ懇鎿﹀姏涓�瀹氭槸闃诲姏
5
锛庡鍥炬墍绀猴紝
ACB
鏄竴涓崐寰勪负
R
鐨勫崐鍦嗘煴闈㈢殑妯埅闈紝鐩村緞
AB
姘村钩锛?/p>
C
涓烘埅闈笂鐨勬渶浣庣偣锛?/p>
AC
闂存湁
涓�鏂滈潰锛屼粠
A
鐐逛互澶у皬涓嶅悓鐨勫垵閫熷害
v
1
銆?/p>
v
2
娌?/p>
AB
鏂瑰悜姘村钩鎶涘嚭涓や釜灏忕悆锛?/p>
a
鍜?/p>
b
锛屽垎鍒惤鍦ㄦ枩闈?/p>
AC
鍜屽渾
寮ч潰
CB
涓婏紝涓嶈绌烘皵闃诲姏锛屼笅鍒楀垽鏂纭殑鏄紙
锛?/p>
A.
鍒濋�熷害
v
1
鍙兘澶т簬
v
2
B.a
鐞冪殑椋炶鏃堕棿鍙兘姣?/p>
b
鐞冮暱
C.
鑻?/p>
v
2
澶у皬鍚堥�傦紝鍙娇
b
鐞冨瀭鐩存挒鍑诲埌鍦嗗姬闈?/p>
CB
涓?/p>