The timetable of a train is shown below.

Station	Arrival	Departure
New Delhi		06.45 AM
Meerut	08.03 AM	08.05 AM
Muzaffarnagar	08.45 AM	08.47 AM
Saharanpur	09.50 AM	09.55 AM
Roorkee	10.30 AM

The distance between Meerut and Muzaffarnagar is about $60 \mathrm{km}$. Calculate the average speed of the train while travelling between the two stations.

Three students start running from the starting point at the same time. The picture shows the position of the students on the path after a minute. Which student ran the fastest? Explain your answer.

The diagram shows a pendulum in periodic motion. The time period of a pendulum is the time taken by the bob to make one complete oscillation. 

What would be the movement of the bob for one complete oscillation of the pendulum?

The table shows the time taken for $30$ oscillations by four different pendulums.

Which pendulum has the shortest time period?

Anju walks $8 \mathrm{m}$ to the east, then $6 \mathrm{m}$ to the south, then $8 \mathrm{m}$ to the west, and finally $6 \mathrm{m}$ to the north. What is the distance covered and displacement of Anju?