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In the study of kinematics, we consider a moving object as a particle.
Displacement
Kinematics in One Dimension (Phy 2053) vittitoe
0 2 4 6246
x
Displacement
The displacement of a particle is defined as its change in position.
(m)
x = x xo
= 6 m 2 m
= 4 m (West)
0 2 4 6246
x
The displacement of a particle is defined as its change in position.
(m)
x = x xo
= m m
= m (west)
Displacement
x = x xo
= m-2m
= - m (East)distance =? ….travels 2m to 6m = 4m, then travels from 6m to -4m, which is 10mTotal distance x = 14m
0 2 4 6246
x
The displacement of a particle is defined as its change in position.
(m)
x = x xo
= ( m) (6 m)
= 8 m (west)
Displacement
m 40m 03m 70
xΔxΔxΔ 21net
EastWest
70 m
30 m
Displacement
East40 m
Displacement
A student walks 70 m East, then walks 30 km West.What is the magnitude of the students net displacement?
A) 30 m
B) 40 m
C) 70 m
D) 100 m
Graph on SB
Average speed
The average speed of a particle is defined as
time totaldistance total
speed Average
Velocity
Average velocity
The average velocity of a particle is defined as
xv
tx
vx
12
12ttxx
Velocity
The displacement versus time for a certain particle moving along the x axis is shown below. Find the average velocity in the time intervals
(a) 0 to 2 s
(b) 0 to 4 s
(c) 2 s to 4 s
(d) 4 s to 7 s
(e) 0 to 8 s.
Motion Diagrams
x
t
tx
v
sm 0.5
02010
v
Kinematics in One Dimension (Phy 2053) vittitoe
The displacement versus time for a certain particle moving along the x axis is shown below. Find the average velocity in the time intervals
(a) 0 to 2 s
(b) 0 to 4 s
(c) 2 s to 4 s
(d) 4 s to 7 s
(e) 0 to 8 s.
Motion Diagrams (con’t)
x
t
tx
v
sm 25.1
0405
v
Kinematics in One Dimension (Phy 2053) vittitoe
The displacement versus time for a certain particle moving along the x axis is shown below. Find the average velocity in the time intervals
(a) 0 to 2 s
(b) 0 to 4 s
(c) 2 s to 4 s
(d) 4 s to 7 s
(e) 0 to 8 s.
Motion Diagrams (con’t)
x
t
tx
v
sm 5.2
24105
v
Kinematics in One Dimension (Phy 2053) vittitoe
The displacement versus time for a certain particle moving along the x axis is shown below. Find the average velocity in the time intervals
(a) 0 to 2 s
(b) 0 to 4 s
(c) 2 s to 4 s
(d) 4 s to 7 s
(e) 0 to 8 s.
Motion Diagrams (con’t)
x
t
tx
v
sm 33.3
4755
v
Kinematics in One Dimension (Phy 2053) vittitoe
The displacement versus time for a certain particle moving along the x axis is shown below. Find the average velocity in the time intervals
(a) 0 to 2 s
(b) 0 to 4 s
(c) 2 s to 4 s
(d) 4 s to 7 s
(e) 0 to 8 s.
Motion Diagrams (con’t)
t
tx
v
sm 0.0
0800
v
Kinematics in One Dimension (Phy 2053) vittitoe