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