_._
_._
骞胯タ閽﹀窞甯備笅瀛︽湡鏈熸湯鑰冭瘯璇曢锛?/p>
B
鍗凤級
鍏勾绾х墿鐞?/p>
涓�銆?/p>
閫夋嫨棰?/p>
1.
濡傚浘锛岀敤姝ゆ粦杞粍鍦ㄥぇ灏忎负
15N
鐨勬媺鍔涗綔鐢ㄤ笅灏嗛噸鍔涗负
50N
鐨勭墿浣撳寑閫熸彁鍗?/p>
0.1m
锛屾墍鐢ㄦ椂
闂?/p>
涓?
2s
锛?/p>
涓?/p>
璁?/p>
缁?/p>
閲?/p>
鍙?/p>
鎽?/p>
鎿?/p>
锛?/p>
涓?/p>
鍒?/p>
璇?/p>
娉?/p>
姝?/p>
纭?/p>
鐨?/p>
鏄?/p>
锛?/p>
锛?/p>
A
锛庣怀瀛愯嚜鐢辩绉诲姩鐨勯�熷害涓?/p>
0.25m/s
B
锛庢媺鍔?/p>
F
鎵�鍋氱殑鍔熶负
7.5J
C
锛庢粦杞粍鐨勬満姊版晥鐜囦负
83.3%
D
锛庝笂鍗囪繃绋嬩腑鐗╀綋鐨勫姩鑳借浆鍖栦负閲嶅姏鍔胯兘
2.
濡傛墍绀鸿缃紝鐗╀綋
B
鎵�鍙楅噸鍔?/p>
G
B
=9N
锛岀墿浣?/p>
A
娌挎按骞虫闈㈠悜鍙冲寑閫熻繍鍔ㄣ�傚皬鏂囩敤涓�涓按
骞冲悜宸︾殑鍔?/p>
F
1
鎷夌墿浣?/p>
A
锛屼娇鐗╀綋
B
浠ラ�熷害
v
1
鍖�閫熶笂鍗囷紝姝ゆ椂婊戣疆缁勭殑鏈烘鏁堢巼涓?/p>
畏
1
锛?/p>
鎷夊姏
F
1
鐨勫姛鐜囦负
P
1
锛涜嫢灏嗕竴涓笌
B
瀹屽叏鐩稿悓鐨勭墿浣?/p>
C
绯诲湪
B
涓嬬锛屽皬鏂囩敤鍙︿竴涓按骞?/p>
鍚戝乏鐨勫姏
F
2
鎷夌墿浣?/p>
A
锛屼娇鐗╀綋
B
鍜?/p>
C
涓�璧蜂互
v
2
鐨勯�熷害鍖�閫熶笂鍗囷紝姝ゆ椂婊戣疆缁勭殑鏈烘鏁?/p>
鐜囦负
畏
2
锛屾媺鍔?/p>
F
2
鐨勫姛鐜囦负
P
2
銆?/p>
畏
1
:
畏
2
= 4:5
锛?/p>
v
1
:
v
2
= 1:2
锛屼笉璁＄怀閲嶅強婊戣疆
杞?
澶?
鐨?
鎽?
鎿?
锛?
鍒?/p>
A
锛庡姩婊戣疆閲?/p>
G
鍔?/p>
=" 6N" B
锛庣墿浣?/p>
A
鍙楀埌鐨勬懇鎿﹀姏
f
A
= 0.5
锛?/p>
C
锛庢媺鍔?/p>
F
1
:
F
2
=10:13
D
锛庢媺鍔涚殑鍔熺巼
P
1
:
P
2
=13:5
3.
灏忔槑涓哄府鍔╃埜鐖告惉杩愯淇潗鏂欒璁′簡濡傚浘鎵�绀虹殑鐢层�佷箼涓ょ鏂规锛屽皬鏄庨噰鐢ㄨ繖涓ょ鎼繍鏂?/p>
妗堝垎鍒皢鍦伴潰涓婅川閲忕浉鍚岀殑鏉愭枡杩愰�佸埌浜屾ゼ鐨勮繃绋嬩腑锛?/p>
瀹為檯鎵�鐢ㄦ媺鍔涘拰鏃堕棿鍧囩浉鍚屻�?/p>
宸茬煡姣忎釜
婊戣疆鍙楀埌鐨勯噸鍔涚浉鍚岋紝缁抽噸涓庢粦杞殑鎽╂摝鍧囧彲蹇界暐涓嶈銆傚垯鍒╃敤鐢层�佷箼涓ょ鏂规
(
)
A
锛庡皬鏄庢墍鍋氱殑鏈夌敤鍔熶箣姣斾负
3:4 B
锛庡皬鏄庢墍鍋氱殑鎬诲姛涔嬫瘮涓?/p>
1:1
C
锛庢粦杞粍鐨勬満姊版晥鐜囦箣姣斾负
4:3 D
锛庡皬鏄庢柦鍔犳媺鍔涚殑鍔熺巼涔嬫瘮涓?/p>
4:3
4.
浠ヤ笅鏄皬鍏板涓�浜涚墿鐞嗙煡璇嗙殑鎯宠薄锛屽叾涓綘璁や负鍚堢悊鐨勬槸