The formula for calculating average speed is: average speed = total distance / total time.
Yes, you can use any units of measurement for distance and time as long as they are consistent. For example, if you use kilometers for distance, then you should use hours for time.
To find the total distance, add up all the distances traveled. To find the total time, add up all the individual times it took to travel each distance.
If you have multiple speeds for different parts of the problem, you will need to find the total distance and total time for each part separately. Then, you can use the formula mentioned in question 1 to find the average speed for the entire problem.
No, average speed and instantaneous speed are different. Average speed is calculated over a certain period of time, while instantaneous speed is the speed at a specific moment in time.