璇曞嵎绗?/p>
1
椤碉紝鎬?/p>
7
椤?/p>
绗崄鍏珷
銆婂姩閲忓畧鎭掑畾寰嬨�嬪崟鍏冩祴璇曢
涓�銆佸崟閫夐锛堟瘡灏忛鍙湁涓�涓纭瓟妗堬級
1
锛庡叧浜庡姩閲忕殑姒傚康锛屼笅鍒楄娉曟纭殑鏄?/p>
(
)
A
锛庡姩閲忓ぇ鐨勭墿浣撴儻鎬т竴瀹氬ぇ
B
锛庡姩閲忓ぇ鐨勭墿浣撹繍鍔ㄤ竴瀹氬揩
C
锛庡姩閲忕浉鍚岀殑鐗╀綋杩愬姩鏂瑰悜涓�瀹氱浉鍚?/p>
D
锛庣墿浣撶殑鍔ㄩ噺鍙戠敓鍙樺寲锛屽叾鍔ㄨ兘涓�瀹氬彉鍖?/p>
2
锛庤川閲忎负
m
鐨勭墿浣撲互
v
鐨勫垵閫熷害绔栫洿鍚戜笂鎶涘嚭锛岀粡鏃堕棿
t
杈惧埌鏈�楂樼偣銆傞�熷害鍙樹负
0
锛?/p>
浠ョ珫鐩村悜涓婁负姝ｆ柟鍚戯紝
鍦ㄨ繖涓繃绋嬩腑锛?/p>
鐗╀綋鐨勫姩閲忓彉鍖栭噺鍜岄噸鍔涚殑鍐查噺鍒嗗埆鏄?/p>
锛?/p>
锛?/p>
A
锛?/p>
-mv
鍜?/p>
-mgt B
锛?/p>
mv
鍜?/p>
mgt C
锛?/p>
mv
鍜?/p>
-mgt D
锛?/p>
-mv
鍜?/p>
mgt
3
锛庡鍥炬墍绀猴紝涓�杞诲脊绨х殑涓ょ涓庤川閲忓垎鍒负
m
1
鍜?/p>
m
2
鐨勪袱鐗╁潡鐢层�佷箼杩炴帴锛岄潤姝㈠湪鍏夋粦
鐨勬按骞抽潰涓娿�傜幇鍦ㄤ娇鐢茬灛鏃惰幏寰楁按骞冲悜鍙崇殑閫熷害
v
0
=4m/s
锛屽綋鐢茬墿浣撶殑閫熷害鍑忓皬鍒?/p>
1m/s
鏃讹紝寮圭哀鏈�鐭�備笅鍒楄娉曟纭殑鏄?/p>
( )
A
锛庢鏃朵箼鐗╀綋鐨勯�熷害涔熸槸
1m/s
B
锛庣揣鎺ョ潃鐢茬墿浣撳皢寮�濮嬪仛鍔犻�熻繍鍔?/p>
C
锛庣敳涔欎袱鐗╀綋鐨勮川閲忎箣姣?/p>
1
2
:
1:
4
m
m
飥?/p>
D
锛庡綋寮圭哀鎭㈠鍘熼暱鏃讹紝涔欑墿浣撶殑閫熷害澶у皬涔熶负
4m/s
4
锛?/p>
浠庢按骞冲湴闈㈠皢涓�灏忕悆鏂滃悜涓婃姏鍑猴紝
涓嶈绌烘皵闃诲姏锛?/p>
鍒欏皬鐞冨湪绌轰腑杩愬姩鐨勮繃绋嬩腑
( )
A
锛庨�熷害涓�鐩村噺灏?/p>
B
锛庡姞閫熷害涓�鐩村噺灏?/p>
C
锛庡湪鏈�楂樼偣鏃剁殑鍔ㄩ噺涓?/p>
0
D
锛庡湪鐩稿悓鐨勬椂闂撮棿闅斿唴锛屽姩閲忕殑鍙樺寲閲忕浉鍚?/p>
5
锛庡皬杞︿笂瑁呮湁涓�妗舵按锛岄潤姝㈠湪鍏夋粦姘村钩鍦伴潰涓婏紝濡傚浘鎵�绀猴紝妗剁殑鍓嶃�佸悗銆佸簳鍙婁晶闈㈠悇
瑁呮湁涓�涓榾闂紝鍒嗗埆涓?/p>
S
1
銆?/p>
S
2
銆?/p>
S
3
銆?/p>
S
4
(
鍥句腑鏈叏鐢诲嚭
)
锛庤浣垮皬杞﹀悜鍓嶈繍鍔紝鍙噰鐢ㄧ殑
鏂规硶鏄?/p>
( )
A
锛庢墦寮�闃�闂?/p>
S
1
B
锛庢墦寮�闃�闂?/p>
S
2
C
锛庢墦寮�闃�闂?/p>
S
3
D
锛庢墦寮�闃�闂?/p>
S
4
6
锛庝竴灏忚埞鐩稿鍦伴潰浠ラ�熷害
v
1
鍚戜笢鍖�閫熻椹讹紝鑻ュ湪鑸逛笂浠ョ浉瀵逛簬鍦伴潰鐨勯�熺巼
v
姘村钩鍚戣タ
鎶涘嚭涓�涓川閲忎负
m
鐨勯噸鐗╋紝鍒欏皬鑸圭殑閫熷害灏?/p>
(
)