This chapter talks about motion particularly distance and displacement.

4. Chapter 2: MOTION
Lesson 1 Distance & Displacement

5. DISTANCE
• Distance is a scalar quantity that refers to "how much
ground an object has covered" during its motion.

6. • What is scalar? and what is its contrary?
• Scalars are quantities that are fully described by a
magnitude (or numerical value) alone.
• Vectors are quantities that are fully described by both a
magnitude and a direction.
• This will be discussed more on lesson 2.

7. DISPLACEMENT
• Displacement is a vector quantity that refers to "how far
out of place an object is"; it is the object's overall change
in position.

9. • Problem 1: An object moves from point A to point B to point C,
then back to point B and then to point C along the line shown in
the figure below.
• a) Find the distance covered by the moving object.
• b) Find the magnitude and direction of the displacement of the
object.

10. An object moves from point A to point B to point C, then back to point B and then to point C
along the line shown in the figure below.
a) Find the distance covered by the moving object.
b) Find the magnitude and direction of the displacement of the object.

12. • a) distance = AB + BC + CB + BC = 5 + 4 + 4 + 4 = 17 km
• b) The magnitude of the displacement is equal to the
distance between the final point C and the initial point A =
AC = 9 km
• The direction of the displacement is the direction of the
ray AB.