Answer to Question #131186 in Mechanics | Relativity for Rimsha Ahmed

Question

If we have different speeds for example one is 20 km/hr, 36 km/hr, 45 km/hr, and 20 km/hr for a total distance (that we do not know) and we know total time taken for that total distance, then how can we calculate the total distance covered?

Answer 1

The formula for distance, if you know time (duration) and the average speed, is: Distance = Speed * Time.

The result will depend on the unit of the speed metric, for example if speed is given in mph, the result will be in miles, if it is given in km/h, the result will be in kilometers. As usual, make sure that the time unit of the speed measure is the same as the time unit for the duration of the trip.

The average speed for our example is (20 + 36 + 45 + 20)/4 = 30.25 km/hr.