Figure shows the velocity-time graph of a particle moving in a straight line.

(i) State the nature of motion of particle.

(ii) Find the displacement of particle at t = 6 s.

(iii) Does the particle change its direction of motion?

(iv) Compare the distance travelled by the particle from 0 to 4 s and from 4 s to 6 s.

(v) Find the acceleration from 0 to 4 s and retardation from 4 s to 6 s.

A car acquires a velocity of 54 ms^-1 in 20 s starting from rest, then its acceleration is:

1. 5.4 ms^-2
2. 2.7 ms^-2
3. 7.2 ms^-2
4. 2.0 ms^-2

A particle starts to move in a straight line from a point with a velocity 10 ms^-1 and acceleration -2.0 ms^-2. Its position at t = 5 s will be :

1. 5 m
2. 10 m
3. 20 m
4. 25 m