Page 122 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

Let’s observe the two figures showing the journey of a B
person from A to C through B
60 m
While reaching C from A through B 40 m
What is the total distance travelled according to
A C
Fig.9.5 (a)? What is the displacement? 80 m
Fig. 9.5 (a)
What is the total distance travelled according to
Fig.9.5 (b)? What is the displacement?
Analyse the two answers obtained and find the situation
in which the magnitude of distance and displacement A 60 m B 40 m C
becomes equal and write it down in the science diary. Fig. 9.5 (b)

When a body travels along a straight line in the same direction,
the magnitude of its distance and displacement will be equal.

On the basis of your findings, write down the differences
between distance and displacement and complete Table 9.4

Sl
Distance Displacement
No.
1 scalar vector

2

Table 9.4

40
See 'dooravum staanaantharavum' in
School Resources in IT@ School Edubuntu.

Speed and Velocity

Did you read the notice put up in the city? Hope
you know that excess speed and careless driving
are the two major reasons for accidents.
Number of people who died in
Do you know what excess speed is? accidents in the city this year till
Let's use the measurements of Fig.9.2 and do now... 146
Life is precious. Drive safely
another activity. The time taken to travel to the
office and back home was 600 s each. Based on these
measurements, try to complete table 9.5.

Basic Science VIII 121