1
t
2
t
0
t
v
t
O
1
v
1
2
v
鐢?
涔?
涓婃捣鏍艰嚧涓
2019
灞婇珮涓夌涓�瀛︽湡鏈熶腑鑰冭瘯
锛堟祴璇?/p>
120
鍒嗛挓鍐呭畬鎴愶紝鎬诲垎
150
鍒嗭紝璇曞悗浜ょ瓟鍗风焊锛?/p>
鍙嬫儏鎻愮ず锛氭槰澶╋紝浣犳棦鐒剁粡鍘嗕簡鑹拌嫤鐨勫涔狅紝浠婂ぉ锛屼綘蹇呭皢璧㈠緱鍙枩鐨勬敹鑾凤紒
绁濅綘锛氳瘹瀹炲畧淇★紝娌夌潃鍐烽潤锛岀粏鑷磋笍瀹烇紝鑷俊鑷己锛屽幓杩庢帴鑳滃埄锛?/p>
锛堟湰璇曞嵎
g=10m/s
2
锛?/p>
涓�銆佸崟閫夐锛堟瘡棰?/p>
4
鍒嗭紝鍏?/p>
20
鍒嗭級
1
锛庣敳銆佷箼涓よ締姹借溅娌垮悓涓�骞崇洿璺潰琛岄┒锛屽畠浠敱鍚屼竴浣嶇疆鍑哄彂鍚庣殑
鍥捐薄濡傚浘鎵�绀猴紝涓?
鍒楄娉曟纭殑鏄?/p>
锛?/p>
锛?/p>
A
锛庣敳姣斾箼鏅氬嚭鍙?/p>
鏃堕棿
B
锛?/p>
鏃跺埢涔欒拷涓婄敳
C
锛?/p>
鏃跺埢涔欏湪鐢插墠闈?/p>
D
锛庝箼杩戒笂鐢插墠涓よ溅鏈�杩滆窛绂讳竴瀹氬ぇ浜?
2
锛庡皢璐ㄩ噺鐩稿悓鐨勫悓绉嶆皵浣?/p>
A
銆?/p>
B
鍒嗗埆瀵嗗皝鍦ㄤ綋绉笉鍚?/p>
鐨勪袱瀹瑰櫒涓紝淇濇寔涓ら儴鍒嗘皵浣撲綋绉笉鍙橈紝
A
銆?/p>
B
涓?/p>
閮ㄥ垎姘斾綋鐨勫帇寮洪殢娓╁害
t
鐨勫彉鍖栨洸绾垮鍥炬墍绀恒�?/p>
鍒欎笅鍒楄娉?/p>
閿欒
鐨勬槸锛?/p>
锛?/p>
锛?/p>
A
锛?/p>
A
閮ㄥ垎姘斾綋鐨勪綋绉瘮
B
閮ㄥ垎灏忋�?/p>
B
锛?/p>
A
銆?/p>
B
鐩寸嚎鐨勫欢闀跨嚎灏嗙浉浜や簬
t
杞翠笂鐨勫悓涓�鐐广�?/p>
C
锛?/p>
A
銆?/p>
B
姘斾綋娓╁害鏀瑰彉閲忕浉鍚屾椂锛屽帇寮烘敼鍙橀噺鐩稿悓銆?/p>
D
锛?/p>
A
銆?/p>
B
姘斾綋娓╁害鏀瑰彉閲忕浉鍚屾椂锛?/p>
A
閮ㄥ垎姘斾綋鍘嬪己鏀瑰彉閲忚緝澶с�?/p>
3
锛庡鍥炬墍绀猴紝
a
涓烘斁鍦ㄨ丹閬撲笂鐨勭墿浣擄紱
b
涓烘部鍦扮悆琛ㄩ潰闄勮繎鍋氬寑閫熷渾鍛ㄨ繍鍔ㄧ殑浜洪�犲崼鏄燂紱
c
涓哄湴鐞冨悓姝ュ崼鏄熴�備互涓嬪叧浜?/p>
a
銆?/p>
b
銆?/p>
c
鐨勮娉曚腑姝ｇ‘鐨勬槸锛?/p>
锛?/p>
锛?/p>
A
锛?/p>
a
銆?/p>
b
銆?/p>
c
浣滃寑閫熷渾鍛ㄨ繍鍔ㄧ殑鍚戝績鍔犻�熷害澶у皬鍏崇郴涓?/p>
B
锛?/p>
a
銆?/p>
b
銆?/p>
c
浣滃寑閫熷渾鍛ㄨ繍鍔ㄧ殑鍚戝績鍔犻�熷害澶у皬鍏崇郴涓?/p>