澶у�︾墿鐞嗗�嶄範棰樼洰 - 鐧惧害鏂囧簱

鏂板缓

涓婁紶

棣栭〉

鍔╂墜

鏈�杩?/div>

璧勬枡搴?/div>

宸ュ叿

缁冧範涓�

 

璐ㄧ偣杩愬姩瀛?/p>

 

涓�銆侀�夋嫨棰?/p>

 

1

銆佷竴璐ㄧ偣娌?/p>

x

杞磋繍鍔�锛屽叾閫熷害涓庢椂闂寸殑鍏崇郴涓?/p>

2

4

t

飦?/p>

飥?/p>

飥?/p>

锛?/p>

SI

锛?/p>

锛屽綋

t=3 s

鏃讹紝

x=9 m,

鍒欒川鐐圭殑杩愬姩瀛︽柟绋嬫槸

                                               

锛?/p>

       

锛?/p>

                                                             

2

銆?/p>

涓�

璐?/p>

鐐?/p>

娌?/p>

X

杞?/p>

鐨?/p>

杩?/p>

鍔?/p>

瑙?/p>

寰?/p>

鏄?/p>

5

4

2

飥?/p>

飥?/p>

飥?/p>

t

t

x

(SI)

锛?/p>

鍓?/p>

涓?/p>

绉?/p>

鍐?/p>

瀹?/p>

鐨?/p>

        

锛?/p>

       

锛?/p>

 

A 

浣嶇Щ鍜岃矾绋嬮兘鏄?/p>

3

m

锛?/p>

            B 

浣嶇Щ鍜岃矾绋嬮兘鏄?/p>

-3

m

锛?/p>

 

C 

浣嶇Щ鏄?/p>

-3

m

锛岃矾绋嬫槸

3

m

锛?/p>

         D 

浣嶇Щ鏄?/p>

-3

m

锛岃矾绋嬫槸

5

m

  

3

銆佷竴璐ㄧ偣鍦ㄥ钩闈�涓婅繍鍔�锛屽凡鐭ヨ川鐐逛綅缃�鐭㈤噺鐨勮〃绀哄紡涓�

2

2

at

bt

飥?/p>

飥?/p>

r

i

j

 

锛堝叾涓?/p>

a

銆?/p>

b

涓?

甯?

閲?

锛?

, 

鍒?

璇?

璐?

鐐?

浣?/p>

            

锛?/p>

        

锛?/p>

                                                         

A  

鍖�閫熺洿绾胯繍鍔?/p>

    B 

鍖�鍙橀�熺洿绾胯繍鍔?/p>

                  

C 

鎶涚墿绾胯繍鍔?/p>

       D 

涓�鑸�鏇茬嚎杩愬�?/p>

 

4

銆佷竴灏忕悆娌挎枩闈㈠悜涓婅繍鍔�锛屽叾杩愬姩鏂圭�?/p>

2

4

5

t

t

s

飥?/p>

飥?/p>

飥?/p>

 (SI)

锛屽垯灏忕悆杩愬姩鍒版渶楂樼偣

鐨勬椂鍒?/p>

 

鏄?/p>

                                                                   

锛?/p>

       

锛?/p>

 

A  t=4S;          B  t=2S       C  t=8S;          D  t=5S  

5

銆?

涓?

鍒?

璇?

娉?

涓?

鍝?

涓�

涓?

鏄?

姝?

纭?

鐨?/p>

            

锛?/p>

        

锛?/p>

 

 A  

鍔犻�熷害鎭掑畾涓嶅彉鏃讹紝璐ㄧ偣杩愬姩鏂瑰悜涔熶笉鍙?/p>

  

 B  

骞冲潎閫熺巼绛変簬骞冲潎閫熷害鐨勫ぇ灏?/p>