You are marching along a beautiful route. In the first half, you run at the speed of v 1, and in the second half, you continue to run at the speed of v2. Now, we want to know the average speed of your whole trip. Next, we will show you how to calculate the average speed in detail.

♂? Different forward and backward speeds

In the first half, you run at the speed of v 1, and it takes t1=1/2 * s/v1. In the second half, the time you need to accelerate to v2 is t2 = 1/2 * s/v2.

Formula for calculating average speed

The formula for calculating the whole average speed v is: v = s/(t 1+t2). Substituting the previous time formula, we get: v = s/(1/2 * s/v1+1/2 * s/v2). Further simplification, we get the formula of average velocity: v = 2v 1 * v2/(v 1+v2).

Master the secret of calculating the average speed

Now, you have mastered the secret of calculating the average speed. Try this formula on your next outdoor adventure or fitness run to see what your average speed is!