.
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璁＄畻棰?/p>
1
銆佷竴璐ㄧ偣娌?/p>
X
杞磋繍鍔紝鍏跺姞閫熷害
a=-kv
2
锛屽紡涓?/p>
k
涓哄父鏁般�傝
t=0
鏃讹紝
x=0
锛?/p>
v=v
0
锛?/p>
姹傝璐ㄧ偣鐨勮繍鍔ㄦ柟绋嬨�?/p>
2
銆佷竴璐ㄧ偣浣滅洿绾胯繍鍔紝鍔犻�熷害涓?/p>
a=2+4t(SI)
,
闆舵椂鍒绘椂
x
0
=5m
锛?/p>
v
0
=6m/s
锛屾眰
t=3s
鏃剁殑閫熷害鍜屼綅缃�?/p>
3
銆佷竴璐ㄧ偣娌?/p>
X
杞磋繍鍔紝鍧愭爣涓庢椂闂寸殑鍏崇郴涓?/p>
x
0
=9+4t-2t
2
锛?/p>
SI
锛?/p>
锛屽垯鍦ㄦ渶鍒?/p>
2s
鍐呯殑骞?/p>
鍧囬�熷害涓哄灏戯紵
2s
鏈殑鐬椂閫熷害涓哄灏戯紵鍔犻�熷害涓哄灏戯紵
锛堟棰樹笌绗?/p>
4
棰樼浉浼硷紝涔犻闆嗕笂瑙掑害涓?/p>
45
掳锛?/p>
4
銆佷互鍒濋�熷害
0
v
锛?/p>
20
1
s
m
飥?/p>
飪?/p>
鎶涘嚭涓�灏忕悆锛屾姏鍑烘柟鍚戜笌姘村钩闈㈡垚骞?/p>
60
掳鐨勫す瑙掞紝
姹傦細
(1)
鐞冭建閬撴渶楂樼偣鐨勬洸鐜囧崐寰?/p>
1
R
锛?/p>
(2)
钀藉湴澶勭殑鏇茬巼鍗婂緞
2
R
锛?/p>
(
鎻愮ず锛氬埄鐢ㄦ洸鐜囧崐寰勪笌娉曞悜鍔犻�熷害涔嬮棿鐨勫叧绯?/p>
)
瑙ｏ細璁惧皬鐞冩墍浣滄姏鐗╃嚎杞ㄩ亾濡傞
1-4
鍥炬墍绀猴紟
棰?/p>
1-4
鍥?/p>
(1)
鍦ㄦ渶楂樼偣锛?/p>
o
0
1
60
cos
v
v
v
x
飥?/p>
飥?/p>
2
1
s
m
10
飥?/p>
飪?/p>
飥?/p>
飥?/p>
g
a
n
鍙堚埖
1
2
1
1
飦?/p>
v
a
n
飥?