...
...
浜屾祴鐗╃悊
浜屻�侀�夋嫨棰橈細鏈鍏?/p>
8
灏忛锛屾瘡灏忛
6
鍒嗭紝鍏?/p>
48
鍒嗐�傚湪姣忓皬棰樼粰鍑虹殑鍥涗釜閫夐」
涓紝绗?/p>
14
锝?/p>
18
棰樺彧鏈変竴椤圭鍚堥鐩姹傦紝
绗?/p>
19
锝?/p>
21
棰樻湁澶氶」绗﹀悎棰樼洰瑕佹眰銆?/p>
鍏ㄩ儴閫夊鐨勫緱
6
鍒嗭紝閫夊浣嗕笉鍏ㄧ殑寰?/p>
3
鍒嗭紝鏈夐�夐敊鐨勫緱
0
鍒嗐�?/p>
14
锛庡埄鐢ㄥ鍥炬墍绀虹殑瑁呯疆瑙傚療鍏夌數鏁堝簲鐜拌薄锛屽皢鍏夋潫鐓у皠鍦ㄩ噾灞炴澘涓婏紝鍙戠幇楠岀數鍣ㄦ寚閽堟病鏈?/p>
寮犲紑銆傛浣挎寚閽堝紶寮�锛屽彲
楠岀數鍣?/p>
閲戝睘鏉?/p>
A
锛庡澶ц鍏夋潫鐨勫己搴?/p>
B
锛庡鍔犺鍏夋潫鐨勭収灏勬椂闂?/p>
C
锛庢敼鐢ㄩ鐜囨洿澶х殑鍏ュ皠鍏夋潫
D
锛庢敼鐢ㄩ�稿嚭鍔熸洿澶х殑閲戝睘鏉挎潗鏂?/p>
15
锛庡鍥撅紝骞垮窞濉旀懇澶╄疆浣嶄簬濉旈《
450
绫抽珮绌哄锛屾懇澶╄疆鐢?/p>
16
涓?/p>
鈥?/p>
姘存櫠
鈥?/p>
瑙傚厜鐞冭埍缁勬垚锛?/p>
娌跨潃鍊炬枩鐨勮建閬撳仛鍖�閫熷渾鍛ㄨ繍鍔紝鍒欏潗浜庤鍏夌悆鑸变腑鐨勬煇娓稿
A
锛庡姩閲忎笉鍙?/p>
B
锛庣嚎閫熷害涓嶅彉
C
锛庡悎澶栧姏涓嶅彉
D
锛庢満姊拌兘涓嶅畧鎭?/p>
16
锛庡鍥撅紝璺抽珮杩愬姩鍛樿捣璺冲悗鍚戜笂杩愬姩锛岃秺杩囨í鏉嗗悗寮�濮嬪悜涓嬭繍鍔紝鍒欒繍鍔ㄥ憳瓒婅繃妯潌鍓嶃�?/p>
鍚庡湪绌轰腑鎵�澶勭殑鐘舵�佸垎鍒负
A
锛庡け閲嶃�佸け閲?/p>
B
锛庤秴閲嶃�佽秴閲?/p>
C
锛庡け閲嶃�佽秴閲?/p>
D
锛庤秴閲嶃�佸け閲?/p>
17
锛庢潕澶у涔板畬鑿滃悗涔樼數姊笂妤煎洖瀹讹紝鍏朵箻鍧愮殑鐢垫杩愯鎯呭喌濡傚浘鎵�绀猴紝鍙煡
A
锛庢潕澶у瀹舵墍鍦ㄦゼ灞傜鍦伴珮搴︾害
40m
v/
m
s
-1
2
B
锛?/p>
0
锝?/p>
3s
鍐呯數姊殑鍔犻�熷害澶у皬涓?/p>
0.5m/s
C
锛?/p>
0
锝?/p>
17s
鍐呯數姊殑骞冲潎閫熷害澶у皬涓?/p>
0.75m/s
1.5
1.0
0.5
D
锛庣數姊姞閫熻繍鍔ㄧ殑璺濈绛変簬鍑忛�熻繍鍔ㄧ殑璺濈
O
2
4
6
8
10
12
14
16
18
t
/
s
18
锛庡鍥撅紝鍦ㄥ厜婊戠粷缂樻按骞虫闈笂锛屼笁涓甫鐢靛皬鐞?/p>
a
銆?/p>
b
鍜?/p>
c
鍒嗗埆鍥哄畾浜庢涓夎褰㈤《鐐逛笂銆傚凡
鐭?/p>
a
銆?/p>
b
甯︾數閲忓潎涓?/p>
+q
锛?/p>
c
甯︾數閲忎负
- q
锛屽垯
A
锛?/p>
ab
杩炵嚎涓偣鍦哄己涓洪浂
a
b
B
锛庝笁瑙掑舰涓績澶勫満寮轰负闆?/p>
C
锛?/p>
a
鎵�鍙楀簱浠戝姏鏂瑰悜鍨傜洿浜?/p>
ab
杩炵嚎
c
D
锛?/p>
a
銆?/p>
b
銆?/p>
c
鎵�鍙楀簱浠戝姏澶у皬涔嬫瘮涓?/p>
1:1:
3