2018
骞撮珮涓夌墿鐞嗛�夋嫨棰樹笓椤硅缁冿紙涓�锛?/p>
14
锛庡鍥炬墍绀猴紝鐩寸嚎
I
銆佲叀鍒嗗埆琛ㄧず
A
銆?/p>
B
涓ょ墿浣撲粠鍚屼竴鍦扮偣寮�濮嬭繍鍔ㄧ殑
v-t
鍥?/p>
璞★紝涓嬪垪璇存硶涓纭殑鏄?/p>
A
锛?/p>
A
鐗╀綋鐨勫姞閫熷害灏忎簬
B
鐗╀綋鐨勫姞閫熷害
B
锛?/p>
t
0
鏃跺埢锛屼袱鐗╀綋鐩搁亣
C
锛?/p>
t
0
鏃跺埢锛屼袱鐗╀綋鐩歌窛鏈�杩?/p>
D
锛?/p>
A
鐗╀綋鐨勫姞閫熷害澶т簬
B
鐗╀綋鐨勫姞閫熷害
15
锛庡鍥炬墍绀猴紝鐗╁潡
A
銆?/p>
B
閫氳繃涓�鏍逛笉鍙几闀跨殑缁嗙嚎杩炴帴锛?/p>
A
闈欐鍦ㄦ枩闈笂锛?/p>
缁嗙嚎缁曡繃鍏夋粦鐨勬粦杞媺浣?/p>
B
锛?/p>
A
涓庢粦杞箣闂寸殑缁嗙嚎涓庢枩闈㈠钩琛屻�傚垯鐗╁潡
A
鍙楀姏鐨勪釜鏁板彲鑳芥槸
A
锛?/p>
3
涓?/p>
B
锛?/p>
4
涓?/p>
C
锛?/p>
5
涓?/p>
D
锛?/p>
2
涓?/p>
16
锛庡鍥炬墍绀猴紝
A
銆?/p>
B
銆?/p>
C
銆?/p>
D
鏄湡绌轰腑涓�姝ｅ洓闈綋鐨勫洓涓《鐐广�傜幇鍦ㄥ湪
A
銆?/p>
B
涓?/p>
鐐瑰垎鍒浐瀹氱數閲忎负
+q
銆?/p>
-q
鐨勪袱涓偣鐢佃嵎锛屽垯鍏充簬
C
銆?/p>
D
涓ょ偣鐨勫満寮哄拰鐢靛娍锛?/p>
涓嬪垪璇存硶姝ｇ‘鐨勬槸
A
锛?/p>
C
銆?/p>
D
涓ょ偣鐨勫満寮轰笉鍚岋紝鐢靛娍鐩稿悓
B
锛?/p>
C
銆?/p>
D
涓ょ偣鐨勫満寮虹浉鍚岋紝鐢靛娍涓嶅悓
C
锛?/p>
C
銆?/p>
D
涓ょ偣鐨勫満寮恒�佺數鍔垮潎涓嶅悓
D
锛?/p>
C
銆?/p>
D
涓ょ偣鐨勫満寮恒�佺數鍔垮潎鐩稿悓
17
锛庡浘绀轰负鏌愮灏忓瀷鏃嬭浆鐢垫灑寮忓彂鐢垫満鐨勫師鐞嗗浘锛屽叾鐭╁舰绾垮湀鍦ㄧ鎰熷簲寮?/p>
搴︿负
B
鐨勫寑寮虹鍦轰腑缁曞瀭鐩翠簬纾佸満鏂瑰悜鐨勫浐瀹氳酱
OO
鈥蹭互瑙掗�熷害蠅鍖�
閫熻浆鍔紝绾垮湀鐨勯潰绉负
S
銆佸対鏁颁负
n
銆佺嚎鍦堟�荤數闃讳负
r
锛岀嚎鍦堢殑涓ょ缁?/p>
涓や釜鍗婂渾褰㈢殑闆嗘祦鐜紙缂哄彛鎵�鍦ㄥ钩闈笌纾佸満鍨傜洿锛夊拰鐢靛埛涓庣數闃?/p>
R
杩?/p>
鎺ワ紝涓庣數闃?/p>
R
骞惰仈鐨勪氦娴佺數鍘嬭〃涓虹悊鎯崇數琛ㄣ�傚湪
t=0
鏃跺埢锛岀嚎鍦堝钩闈?/p>
涓庣鍦烘柟鍚戝钩琛岋紙濡傚浘鎵�绀猴級
锛屽垯涓嬪垪璇存硶姝ｇ‘鐨勬槸
A
锛庨�氳繃鐢甸樆
R
鐨勬槸鐩存祦鐢?/p>
B
锛庡彂鐢垫満浜х敓鐢靛姩鍔跨殑鏈�澶у�?/p>
E
m
= nBS
蠅
C
锛庣數鍘嬭〃鐨勭ず鏁颁负
D
锛庣嚎鍦堝唴浜х敓鐨勬槸浜ゆ祦鐢?/p>
18
锛?/p>
2009
骞?/p>
5
鏈堬紝鑻卞浗鐗规妧婕斿憳鍙茶拏澶风壒椴佸姞閲屼簹椋炶溅鎸戞垬涓栫晫鏈�澶х幆褰㈣溅閬撱�傚鍥炬墍绀猴紝鐜舰
杞﹂亾绔栫洿鏀剧疆锛岀洿寰勮揪
12m
锛岃嫢姹借溅鍦ㄨ溅閬撲笂浠?/p>
12m/s
鎭掑畾鐨勯�熺巼杩愬姩锛?/p>
婕斿憳涓庢懇鎵樿溅鐨勬�昏川閲忎负
1000kg
锛岃溅杞笌杞ㄩ亾闂寸殑鍔ㄦ懇鎿﹀洜鏁颁负
0.1
锛?/p>
閲嶅姏鍔犻�熷害
g
鍙?/p>
10m
锛?/p>
s
2
锛屽垯
A
锛庢苯杞﹀彂鍔ㄦ満鐨勫姛鐜囨亽瀹氫负
4.08
脳
10
4
W
B
锛庢苯杞﹂�氳繃鏈�楂樼偣鏃跺鐜舰杞﹂亾鐨勫帇鍔涗负
1.
4
脳
l0
4
N
C
锛庤嫢瑕佹寫鎴樻垚鍔燂紝姹借溅涓嶅彲鑳戒互浣庝簬
12 m/s
鐨勬亽瀹氶�熺巼杩愬姩
D
锛庢苯杞﹀湪鐜舰杞﹂亾涓婄殑瑙掗�熷害涓?/p>
1 rad/s
19
锛庡鍥炬墍绀猴紝涓�绔栫洿缁濈紭杞诲脊绨х殑涓嬬鍥哄畾鍦ㄥ湴闈笂锛屼笂绔繛鎺ヤ竴甯︽鐢靛皬鐞?/p>
P
锛?/p>
灏忕悆鎵�澶勭殑绌洪棿瀛樺湪鐫�绔栫洿鍚戜笂鐨勫寑寮虹數鍦猴紝灏忕悆骞宠 鏃讹紝寮圭哀鎭板ソ澶勪簬鍘熼暱
鐘舵�侊紱鐜扮粰灏忕悆涓�绔栫洿鍚戜笂鐨勫垵閫熷害锛屽皬鐞冩渶楂樿兘杩愬姩鍒?/p>
M
鐐癸紝鍦ㄥ皬鐞冧粠寮�濮?/p>
杩愬姩鑷宠揪鍒版渶楂樼偣鐨?/p>
E
杩囩▼涓紝浠ヤ笅璇存硶姝ｇ‘鐨勬槸
A
锛庡皬鐞冩満姊拌兘鐨勬敼鍙橀噺绛変簬鐢靛満鍔涘仛鐨勫姛