x
/m
y
/m
O
5
10
15
20
25
30
35
40
45
5
10
15
20
25
30
35
v
x
v
y
初速度
v
0
10 m/s
时间
t
2.0 s
重力加速度
g
10 m/s²
9.8 m/s²
位移相关
x
=
v
0
t
=
0.0 m
y
=
gt
2
=
0.0 m
s
=
=
0.0 m
tan
α
=
=
0.0
α
=
0.0°
速度相关
v
x
=
v
0
=
0.0 m/s
v
y
=
gt
=
0.0 m/s
v
=
=
0.0 m/s
tan
θ
=
=
0.0
θ
=
0.0°