The document describes motion, distance, and displacement. It defines a reference point as the starting point for measuring motion. Motion is described as a continuous change in position over time. Distance is defined as the total length of the path traveled by an object, whether by measuring the path directly or the distance between the initial and final positions. Distance is a scalar quantity specified by only a magnitude. An example is given of calculating the total distance traveled by adding the distances of each leg of a journey.

2. Describing Motion: Distance
and Displacement

3. What can you say about the movement?

7. Reference Point
The starting point or the origin
for measuring motion

8. Point of Reference

9. MOTION
A continuous change in position with respect to a
reference point for a particular time interval

11. Two Ways to Find out how far
did the object travel
1.By measuring the total length of the path
travelled by the object.
2.By measuring the distance between the initial
and final position.

12. DISTANCE
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10 m
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-
5 m
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10 m

13. DISTANCE
- - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - -
The total length of the entire
path that the object or a person
travelled in moving from one
place to another

14. DISTANCE
- - - - - - - - - - - - - - - - - - - - - - - -
SCALAR QUANTITY
Specified by a magnitude alone
Single number indicating size,
magnitude and dimension

18. Richard drove to the east at 2 kilometers, then
1 kilometer south, and 1kilometer west to
reach home. How long is the total distance he
travelled?