1. Translational
Motion
How far and how
fast can you go?
It is better to be
faster?

2. Mechanics
- The branch of physics that is
concerned with the analysis of the action
of forces on matter or material systems.
KineMatics
- The branch of mechanics that studies
the motion of a body or a system of
bodies without consideration given to
its mass or the forces acting on it.

3. Translational/Rectilinear
Motion
- refers to a type of motion in which a body
or object moves along a linear axis rather
than a rotational axis

4. TranslaTional MoTion
How far?
DisTance
DisplaceMenT
- the total path traversed by an
object moving from one location
to another
- the length of straight path
connecting the initial
position and the final
position of an object.

5. Still how far?
A man walk 10 m, N and then turn East
and walk for another 20 m. Determine the
distance and displacement.

6. TranslaTional
MoTion
speeD
velociTy
How fast?
Rate of change in
displacement with respect
to time
the distance traveled by an
object along its path divided by
the amount of time taken

7. This time how fast?
The boy is walking towards north with a velocity
of 2 m/s for 100 s. He decided to go back where he
started and walk towards south for 75 s.
a) What is the average speed of the boy in his entire
travel?
b) What is the average velocity of the boy in his entire
travel?
c) What is the average velocity of the boy when he is
returning back?

8. TranslaTional
MoTion
acceleraTion
- a vector quantity which measures the
rate of change of velocity
How fast/slow it becomes faster/slower?
- unit is m/s2

9. Translational
units symbols
Distance m d
Displacement m
Speed m/s v
Velocity m/s
Acceleration m/s2
a
d

v


10. Translational
Motion
a
vv
d
at
tvd
atvv
if
i
if
2
2
22
2
−
=
+=
+=

11. Humpty Dumpty sat on a
wall. Humpty Dumpty had a great
fall.
(a)What is the velocity of Humpty
Dumpty before reaching the ground
if the fall took in 0.5 s?
(b)What is the height of the wall?
atvv if +=
smv
ssmsmv
f
f
/9.4
)5.0)(/8.9(/0 2
=
+=
2
2
at
tvd i +=
md
s
s
m
s
s
m
d
225.1
2
)5.0(8.9
)5.0(0
2
2
=
+=

12. 2. The car travels at constant speed of
60km/hr. What is the distance travel
after 3hrs?
3. The man started to walk with a
speed of 0.5 m/s. If his acceleration is
2 m/s2
, what is the distance after 5
seconds?
4. From rest an object started to move
with an acceleration of 2 m/s2
. What is
the distance travelled if his velocity
after travelling is 10 m/s?