2. 4
A car is moving towards North
A snake is crawling
Speed limit on the
highway in Malaysia
is 110 kmh-1
An athlete is moving
towards the checkpoint
at a velocity of 25 ms-1
5. 7
DISTANCE AND DISPLACEMENT
Total length travelled from point A to
point B
Total distance travelled in a specified
direction
A
B
6. 8
DISTANCE
The total path length travelled from
one location to another
Scalar quantity
SI unit : m
7. 9
DISPLACEMENT
The distance between two location
measured along the shortest path
connecting them in a specified
direction
Vector quantity
SI unit : m
16. 18
ANSWER 1 :
A B
C
3 m
4 m
(a)The total distance moved by the
cow
= 3 m + 4 m
= 7 m
(b) Displacement of the cow
= √32
+ 42
= 5 m due to North East
17. 19
QUESTION 2 :
O A
B
Figure shows the path travelled by a
cyclist. He started his journey from
O, moved a distance of 150 m to
East towards A and then moved a
distance of 200 m to North towards
B. The cyclist took about 25 s to
complete his journey. Determine :
(a) The total distance travelled
(b) The displacement from O
(c) The average speed of the cyclist
(d) The average velocity of the cyclist
150 m
200 m
22. 24
DIFFERENCES BETWEEN
DISTANCE & DISPLACEMENT :
DISTANCE DISPLACEMENT
The total path length
travelled from one
location to another
The distance between
two location measured
along the shortest path
connecting them in a
specified direction
Scalar quantity Vector quantity
SI unit : metre SI unit : metre
23. 25
DIFFERENCES BETWEEN
SpEED & vEloCITy :
SPEED VELOCITY
The rate of change of
distance
The rate of change of
displacement
Scalar quantity Vector quantity
Average speed
= total distance travelled, s
time, t
Average velocity
= total displacement , s
time, t
SI unit : ms-1
SI unit :ms-1