(a) Define average speed and average velocity.
(b) From position-time graph shown in the figure, find :
(i) Velocity of 'A'
(ii) Velocity of 'B'
(iii) Meeting point and time of A' and `13'
CBSE Class IX Science LA (5 Marks)
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(a) Average speed is obtained by total distance travelled by total time taken.
Average velocity is arithmetic mean of initial and final velocity.
(b) (i) Velocity of 'A' = 60/8 = 7.5 m/s
(ii) Velocity of 'B' = 20/8 = 1.25 m/s
(iii) Position and time = 50 m, 4 seconds
Average velocity is arithmetic mean of initial and final velocity.
(b) (i) Velocity of 'A' = 60/8 = 7.5 m/s
(ii) Velocity of 'B' = 20/8 = 1.25 m/s
(iii) Position and time = 50 m, 4 seconds
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