.
From 0 to A and from B to C
From A to B and from D to E
From 0 to A and from D to E
From B to C only
From 0 to A and from B to C
From A to B, from C to D and from E to F
The acceleration is never zero
From 0 to A, from C to D and from E to F
From 0 to A and from B to C
From A to B and from D to E
From 0 to A and from D to E
From B to C only
1 m/s^{2}
0.24 m/s^{2}
21 m/s^{2}
5 m/s^{2}
From 0 to A
From A to B
From B to C
From C to D
From D to E
From E to F
0.8 m/s^{2}
- 2 m/s^{2}
- 0.8 m/s^{2}
2 m/s^{2}
2.4 m/s^{2}
1.2 m/s^{2}
- 1.2 m/s^{2}
-2.4 m/s^{2}
2 m
10 m
25 m
50 m
A
B
C
D
12/20 cm/s
(12-2)/20 cm/s
20/12 cm/s
20/(12-2) cm/s