An artificial satellite is moving in a circular orbit of radius 36,000 km. Calculate its speed if it takes 24 hours to revolve around the earth.
2. (a) Define average speed. (b) A bus travels a distance of 120 km with a speed of 40 km/h and returns

with a speed of 30 km/h. Calculate the average speed for the entire journey. 3. Define uniform and non-uniform motion. Write one example for each. 4. What does the odometer of an automobile measure? Which of the

following is moving faster? Justify your answer. (i) A scooter moving with a speed of 300 m per I minute. (ii) A car moving with a speed of 36 km per hour. 5. A car travels from stop A to stop B with a speed of 30 km/h and then

returns back to A with a speed of 50 km/h. Find

(i) displacement of the car. (ii) distance travelled by the car. (iii) average speed of the car. 6. A car moves with a speed of 30 km/h–1 for half an hour, 25 km/h–1 for one

hour and 40 km/h–1 for two hours. Calculate the average speed of the car. 7. A circular track has a circumference of 3140 m with AB as one of its

diameter. A scooterist moves from A to B alone the circular path with a

uniform speed of 10 m/s. Find
(a) distance covered by the scooterist,

(b) displacement of the scooterist, and

(c) time taken by the scooterist in reaching from A to B. 8. The following table gives the data about motion of a car. Time (h) 11.00 11.30 12.00 12.30 1.00

Distance (km). 0 30 30 65 100

Plot the graph. (i) Find the speed of the car between 12.00 hours and 12.30 hours. (ii) What is the average speed of the car?

(iii) Is the car’s motion an example of uniform motion? Justify​