2
鍔ㄩ噺鍜屽姩閲忓畾鐞?/p>
1
锛庡姩閲?/p>
(1)
瀹氫箟锛氬湪鐗╃悊瀛︿笂锛屾妸鐗╀綋鐨勮川閲忚窡鍏堕�熷害鐨勪箻绉紝鍙仛鐗╀綋鐨勫姩閲忋�?/p>
(2)
琛ㄨ揪寮忥細
p
锛?/p>
mv
銆?/p>
(3)
鍗曚綅锛歬g路m/s銆?/p>
(4)
鏂瑰悜锛氬姩閲忔槸鐭㈤噺锛屽畠鐨勬柟鍚戜笌閫熷害鐨勬柟鍚戠浉鍚屻�?/p>
(5)
瀵瑰姩閲忕殑鐞嗚В
鈶犲姩閲忕殑鐭㈤噺鎬э細鍔ㄩ噺鏃㈡湁澶у皬锛屽張鏈夋柟鍚戯紝鏄煝閲忋�傚畠鐨勬柟鍚戜笌閫熷害鏂瑰悜鐩稿悓銆傚綋閫?/p>
搴﹀彂鐢熷彉鍖?/p>
(
閫熷害鐨勫ぇ灏忔垨閫熷害鐨勬柟鍚戞垨閫熷害鐨勫ぇ灏忓拰鏂瑰悜鍚屾椂鍙樺寲
)
锛?/p>
鍔ㄩ噺涔熼殢涔嬫敼鍙橈紱
鍔?/p>
閲忕殑杩愮畻閬靛惊骞宠鍥涜竟褰㈠畾鍒欍�?/p>
鈶″姩閲忕殑鐬椂鎬э細
鐢变簬閫熷害鍏锋湁鐬椂鎬э紝
鎵�浠ュ姩閲忎篃鍏锋湁鐬椂鎬э紝
鏄弽鏄犵墿浣撹繍鍔ㄧ姸鎬?/p>
鐨勭墿鐞嗛噺锛屾槸鐘舵�侀噺銆傝皥鍙婂姩閲忔椂锛岄』鎸囨槑鐗╀綋鍦ㄦ煇鏃跺埢鎴栨煇鐘舵�佹椂鎵�鍏锋湁鐨勫姩閲忋�?/p>
鈶㈠姩閲忕殑鐩稿鎬э細
鐢变簬鐗╀綋鐨勯�熷害涓庡弬鑰冪郴鐨勯�夊彇鏈夊叧锛?/p>
鎵�浠ョ墿浣撶殑鍔ㄩ噺涔熶笌鍙傝�冪郴鐨?/p>
閫夊彇鏈夊叧锛?/p>
鍥犺�屽姩閲忓叿鏈夌浉瀵规�с�?/p>
鍦ㄤ腑瀛﹂樁娈碉紝
涓�鑸彇鍦伴潰鎴栫浉瀵瑰湴闈㈤潤姝㈢殑鐗╀綋涓哄弬鑰冪郴銆?/p>
銆愪緥
1
銆?/p>
璐ㄩ噺涓?/p>
m
锛?/p>
2 kg
鐨勭墿浣擄紝浠庣┖涓按骞冲寑閫熼琛岀殑椋炶鐗╀笂鑷敱钀戒笅锛屽凡鐭ラ
琛岀墿鐨勯�熷害涓?/p>
v
0
锛?/p>
3
m/s
锛?/p>
姹傜墿浣撶寮�椋炶鐗╁悗
0.4
s
鏈殑鍔ㄩ噺銆?/p>
涓嶈绌烘皵闃诲姏锛?/p>
g
鍙?/p>
10
m/s
2
銆?/p>
瑙ｆ瀽锛?/p>
浠ュ湴闈负鍙傝�冪郴锛岀墿浣?/p>
0.4 s
鏈椂鐨勯�熷害涓?/p>
v
锛?/p>
v
2
0
锛?/p>
v
2
鈯?/p>
锛?/p>
3
2
锛?/p>
4
2
m/s
锛?/p>
5 m/s
锛?/p>
鎵�浠?/p>
p
锛?/p>
mv
锛?.0脳5 kg路m/s锛?0 kg路m/s锛屾柟鍚戜笌璇ユ椂鍒荤殑閫熷害鏂瑰悜涓�鑷达紝鍗充笌姘村钩鏂瑰悜
鎴?/p>
胃
瑙掞紝
胃
锛?/p>
arctan
v
鈯?/p>
v
0
锛?/p>
arctan
4
3
锛?3掳銆?/p>
绛旀锛?/p>
10 kg路m/s锛屾柟鍚戜笌姘村钩鏂瑰悜鎴?/p>
53掳瑙?/p>
2.
鍔ㄩ噺鐨勫彉鍖?/p>
鍔ㄩ噺鏄煝閲忥紝鍙鐗╀綋鐨?/p>
m
鐨勫ぇ灏忋�?/p>
v
鐨勫ぇ灏忓拰
v
鐨勬柟鍚戜笁鑰呬腑鏈変竴涓彂鐢熷彉鍖栵紝鍒欑墿
浣撶殑鍔ㄩ噺灏卞彂鐢熷彉鍖栥�傚姩閲忕殑鍙樺寲鍙〃绀轰负
螖
p
锛?/p>
p
鏈?/p>
锛?/p>
p
鍒?/p>
锛屾寮忎负鐭㈤噺寮忋�?/p>
螖
p
涔熶负鐭㈤噺锛?/p>
鍏舵柟鍚戜笌
螖
v
鐨勬柟鍚戠浉鍚屻�?/p>
(1)
鍦ㄤ竴缁存儏鍐典笅
(
鍏辩嚎
)
锛屽彲浠ユ妸鍔ㄩ噺鐨勭煝閲忚繍绠楃畝鍖栨垚浠ｆ暟杩愮畻锛屽姩閲忓彉鍖栬绠楀叕寮?/p>
螖
p
锛?/p>
p
2
锛?/p>
p
1
锛?/p>
mv
2
锛?/p>
mv
1
锛?/p>
閫氬父鎯呭喌涓嬪厛閫夊畾涓�涓鏂瑰悜锛?/p>
鐢ㄦ璐熷彿鏉ヨ〃绀哄垵銆?/p>
鏈姩閲忕殑鏂瑰悜銆?/p>
閫熷害鏂瑰悜涓庢鏂瑰悜鐩稿悓锛屽垯璇ョ墿浣撶殑閫熷害鍜屽姩閲忎负姝ｏ紝鐩稿弽鍒欎负璐熴�?/p>
銆愪緥
2
锛?/p>
1
銆?/p>
缇芥瘺鐞冩槸閫熷害杈冨揩鐨勭悆绫昏繍鍔ㄤ箣涓�锛岃繍鍔ㄥ憳鎵ｆ潃缇芥瘺鐞冪殑閫熷害鍙揪鍒?/p>
342
km/h
锛屽亣璁剧悆椋炴潵鐨勯�熷害涓?/p>
90 km/h
锛岃繍鍔ㄥ憳灏嗙悆浠?/p>
342 km/h
鐨勯�熷害鍙嶅悜鍑诲洖銆傝缇芥瘺鐞?/p>
鐨勮川閲忎负
5 g
锛岃瘯姹傦細
(1)
杩愬姩鍛樺嚮鐞冭繃绋嬩腑缇芥瘺鐞冪殑鍔ㄩ噺鍙樺寲閲忋�?/p>
(2)
鍦ㄨ繍鍔ㄥ憳鐨勮繖娆℃墸鏉�涓紝缇芥瘺鐞冪殑閫熷害鍙樺寲銆佸姩鑳藉彉鍖栧悇鏄灏戯紵
瑙ｆ瀽锛?/p>
(1)
浠ョ悆椋炴潵鐨勬柟鍚戜负姝ｆ柟鍚戯紝鍒?/p>
p
1
锛?/p>
mv
1
锛?脳10
锛?/p>
3
脳
90
3.6
kg路m/s锛?.125 kg路m/s銆?/p>
p
2
锛?/p>
mv
2
锛濓紞5脳10
锛?/p>
3
脳
342
3.6
kg路m/s锛濓紞0.475 kg路m/s銆?/p>
鎵�浠ュ姩閲忕殑鍙樺寲閲?/p>
螖
p
锛?/p>
p
2
锛?/p>
p
1
锛濓紞0.475 kg路m/s锛?.125 kg路m/s
锛濓紞0.600 kg路m/s銆?/p>
鍗崇悆鐨勫姩閲忓彉鍖栧ぇ灏忎负
0.600 kg路m/s锛屾柟鍚戜笌鐞冮鏉ョ殑鏂瑰悜鐩稿弽銆?/p>
(2)
缇芥瘺鐞冪殑鍒濋�熷害锛?/p>
v
锛?/p>
25 m/s
锛?/p>
缇芥瘺鐞冪殑鏈�熷害锛?/p>
v
鈥诧紳锛?/p>
95 m/s
锛?/p>
鎵�浠?/p>
螖
v
锛?/p>
v
鈥诧紞
v
锛濓紞
120 m/s
銆?/p>
缇芥瘺鐞冪殑鍒濆姩鑳斤細
E
k
锛?/p>
1
2
mv
2
锛?/p>
1.56 J
锛?/p>