内容正文:
平 抛 运 动 习 题 课
秀州中学 徐漪鸣
2022年12月15日
O
x
y
A
B
tan
β
2tanα=
x方向:vx=v0
y方向:vy=gt
合速度:
v=
方向:tan =
速度
β
x方向:x=v0t
y方向:y=g
合位移:
s=
方向:tan =
位移
α
α是位移与水平方向的夹角(简称:位移角)
β是速度与水平方向的夹角(简称:速度角)
求证:
例1:如图,AB为斜面,倾角为30°,小球从顶A点A以初速度v0水平抛出,恰好落到B点.求
(1)物体在空中飞行的时间;
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迷宫式解题
基本公式出发
有角度的出发
出发口
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迷宫式解题
x=v0t
y=g
基本公式出发
vx=v0
vy=gt
β
tan =
速度
位移
tan =
α
有关位移的角
有关速度的角
位移和速度的角都用
t