(a) Change in speed (b) Change in direction (c) Change in both speed and direction

Question

Here we can consider the starting point as A and while the object moves from A to B the displacement is considered to be positive and from B to A it is negative. 

Answer the following questions: 

Subha goes to the nearby playground from her home

(a) Change in speed

(b) Change in direction

(c) Change in both speed and direction

The distance travelled by train	Initial velocity (u) m/s	Final velocity (v) m/s	Change in velocity (v-u) m/s	Time taken (t) s	Acceleration = Change in velocity/ time a = (v-u)/1 ms2
A-B	0	6	6	10	0.6
B-C
C-D
D-E
E-F

The velocity at different times of a train departing direction is given in the figure. Analyse this and complete the table .

Answer 1

The distance travelled by train	Initial velocity (u) m/s	Final velocity (v) m/s	Change in velocity (v-u) m/s	Time taken (t) s	Acceleration = Change in velocity/ time a = (v-u)/1 ms2
A-B	0	6	6	10	0.6
B-C	6	14	14-6 = 8	10	0.8
C-D	14	14	14-14 = 0	10	0
D-E	14	6	6-14 = 8	10	-0.8
E-F	6	2	2-6 = -4	10	-0.4