From the given $v-t$ graph (Fig.),it can be inferred that the object is

Draw velocity-time graphs for the following situations:
$(i)$ When a body is moving with uniform velocity.
$(ii)$ When a body is moving with variable velocity,but uniform acceleration.
$(iii)$ When a body is moving with variable velocity,but uniform retardation.
$(iv)$ When a body is moving with variable velocity and variable acceleration.

The position-time graph for the motion of a car is given below.
$(i)$ How far did the car travel in the time interval $2 \, s$ to $6 \, s$?
(ii) During which interval of time was its speed greater?
(iii) Calculate the average speed of the car.

$A$ train $100 \, m$ long is moving with a velocity of $60 \, km/h$. Find the time it takes to cross a bridge $1 \, km$ long.

$A$ particle is moving in a circular path of radius $r$. The displacement after half a circle would be:

There are $5$ houses on a street,$A, B, C, D$ and $E$. For all cases,assume that positions to the right are positive.
$(i)$ Draw a frame of reference with house $A$ as the origin and the positions of houses $B, C, D$ and $E$.
$(ii)$ You live in house $C$. What is your position relative to house $E$?
$(iii)$ What are the positions of houses $A$ and $D$,if house $B$ is taken as the reference point?