Motion is defined as a change in position of an object relative to a reference point. The document discusses scalar and vector quantities, with examples such as time and mass being scalar, and force and velocity being vector. It defines distance as the actual length of the path covered by a body, being a scalar, while displacement is the shortest distance between the initial and final positions of the body, making it a vector quantity. The document provides learning objectives and questions to assess understanding of these key concepts of motion.

2. MOTION
A body is said to be in
motion if it changes
its position with
respect to a reference
point

3. Learning objectives
Students will be able to
• Define motion
• Define distance
• Define displacement

4. WARM UP
Watching this video,Calculate Ussain
Bolt’s speed at London Olympics

5. Vector Quantities and scalar
quantities
Scalars- quantities which has only
magnitude
Eg.Time,density,mass,length
Vectors- quantities which has magnitude
and direction.
Eg.force,velocity

6. Distance and displacement
Distance covered is the actual length of the
path covered by the body. It is a scalar.
Displacement is the shortest distance between
the initial and final position of the body. It is a
vector.

8. CONTINOUS ASSESSMENT
1.What are vector quantities? Give examples.
2.What are scalar quantities? Give examples
3.An athlete running with constant speed along
a circular track of radius 20m takes 50 seconds
to complete one round . What is his distance
and displacement at the end of
a) 50 seconds b) 25seconds
4.If a body , which is in motion returns to its
original position ,what is its displacement?

9. Final Assessment
• Define motion
• Define distance covered.
• Define displacement of a body.
• Distinguish between Distance and
displacement