What is Average Speed?
It is the total distance travelled divided by total time taken.
Average Speed = Total Distance/Total Time Taken
Calculating Average Speed
NCERT Question 3 - Abdul, while driving to school, computes the average speed for his trip to be 20 km h–1. On his return trip along the same route, there is less traffic and the average speed is 30 km h–1. What is the average speed for Abdul’s trip?
NCERT Question 10 - An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth
Example 8.1 - An object travels 16 m in 4 s and then another 16 m in 2 s. What isthe average speed of the object?
Example 8.2 - The Odometer of a car reads 2000 km at the start of a trip and 2400 km at the end of the trip. If the trip took 8 h, calculate the average speed of the car in km h −1 and m s -1 .