Name : Piarani Apriliani
NIM : ACD 112 023
Titles
: Introduction to physics
Authors
: John D. Cutnell & Kenneth W. Johnson
Book Publisher
: John Willey & Sons. Inc
Year Published
: 2013
3.2 Equations of kinematics in two

dimension
The
kinematic are two element that direction on the x

axis when the objects moves to
the right or to the left. And direction on y

axis when the objects moves to up or down.
If x is possitive, it means that the object moves to
the right. And if x is negative, it means
that the object moves to the left.
If y is positive, it means that the object moves to the up. And if y is negative, it means
that the object moves to the down.
Equations of kinematics in two

dimension for constan
t acceleration
X component
Variab
le
Y component
x
Displacement
y
a
x
Acceleration
a
y
v
x
Final velocity
v
y
v
0x
Initial velocity
v
0y
+y
+X

x

y
t
Elapsed time
t
V
x
= v
0x
+ a
x
. t
V
y
= v
0y
+ a
y
. t
X = ½ ( v
0x
+ v
x
) . t
X = ½ ( v
0y
+ v
y
) . T
X = v
0x
. t + ½. a
x
. t
2
X = v
0y
. t + ½. a
y
. T
2
V
x
2
=v
0x
2
+ 2 a
x
. x
V
y
2
=v
0y
2
+ 2 a
y
. y
Based on the table of the equation of motion kinematics in two dimensions contained in
the book, one example of the two

dimensional kinematics are
uniformly accelerated
motion (uniformly accelerated motion), which is characterized by c
onstant acceleration.
Analyzing Multiple

concept Problems
When an object moves involving two axis direction, it can be resolved in the following
manner:
+x
v
+y
y
θ
√
√
(
)
(
)
(
)
(
(
)
(
)
)
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