What does the odometer of an automobile measures ? Which of the following is moving faster ? Justify your answer.

$(i)$ A scooter moving with a speed of $300\, m$ per minute.

$(ii)$ A car moving with a speed of $36 \,km$ per hour.

In a long distance race, the athletes were expected to take four rounds of the track such that the line of finish was same as the line of start. Suppose the length of the track was $200\, m$.

$(a)$ What is the total distance to be covered by the athletes ?

$(b)$ What is the displacement of the athletes when they touch the finish line ?

$(c)$ Is the motion of the athletes uniform or nonuniform ?

$(d)$ Is the displacement of an athlete and the distance moved by him at the end of the race equal ?

The following graph describes the motion of a girl going to meet her friend who stays $50\, m$ from her house

$(i)$ How much time she takes to reach her friend's house ?

$(ii)$ What is the distance travelled by the girl during the time$-$interval $0$ to $12$ minute ?

$(iii)$ During which time-interval she is moving towards her house ?

$(iv)$ For how many minutes she was at rest, during the entire journey ?

$(v)$ Calculate the speed by which she returned home.

The position$-$time graph for the motion of a car is given below

$(i)$ How far the car tavelled in the time interval $2$ to $6 s ?$

$(ii)$ During which interval of time its speed was more?

$(iii)$ Calculate the average speed of the car.

Two graphs for motion of objects moving along a straight line are shown. State how the speed is changing with time in both cases.