Motion is defined as the movement of an object exhibited by a change in position. Distance is the total path length traveled by an object, while displacement refers to the straight line distance between starting and end points, and has both magnitude and direction. Speed is a scalar quantity measuring how fast something is moving based on distance over time, while velocity is a vector quantity representing the rate of change of displacement over time.

1. Mechanics

2. MOTION
 defined as the movement of
an object
 exhibited by a change in
position

3. Motion or Movement is a
Change In Position
10 ft.
Position A
Position B

4. DISTANCE AND
DISPLACEMENT
1.DISTANCE - the total path
length traversed by an object
moving from one location to
another
- a scalar quantity
which has only magnitude.

5. 2. DISPLACEMENT-refers
to the straight line
distance between the
starting and end points.
- a vector quantity
which has both
magnitude and direction

6. Distance and Displacement
START
FINISH
Need to distinguish how long we traveled from how
far away (and in what direction) we traveled.

7. 2 Displacement and distance
your
home
your
school
Size = length
of this arrow
A displacement has
displacement from
home to school
displacement from
home to school
To go to school from home...
size & direction.

8. 2 Displacement and distance
To go to school from home... your
l l1 2
Distance = length of path
you travelled
(¹ size of displacement)
l3
home
your
school
= l1 + l2 + l3

9. SPEED AND VELOCITY:
• SPEED- a scalar quantity which measures how fast
something is moving.
Speed equation = distance / time
V = d / t
Unit is m/s or Km/h

10. SPEED-the rate at which
distance is covered at a
given time

11. average speed- defined as the
total distance traveled divided by
the time it took to travel the
distance.

12. Instantaneous speed
the speed
of a body
at any
instant.

13. • VELOCITY- a vector quantity
that represents a rate of
change of displacement.

14. Justin walks
5 km/hr.
How long
did it take
him to travel
15 km?