1. A pendulum has a time period of 2.5 seconds. How many oscillations does it complete in one hour? 2. An athlete runs 200 metres in 16 seconds. What is his average speed in Sl units? 3. A bus travelling at a uniform speed of 60 km/h for 10 minutes. How far does it travel? How long does it take to travel 90 m? 4. A train moves at an average speed of 140 km/h. It travels from Chennai to Bengaluru and completes the journey in 6 h 22 min. What is the distance between the two cities? 5. A moving car travels 20 m every second. Draw a distance-time graph to represent it movement.​