Question

a bird flies at a speed of 50km/h. The bird then changes it's speed to 40km/h and continues for a further 2 hours. what is the average speed of the bird for the whole journey​

Answer 1

Answer:There are several ways to calculate this.

The easiest way would be to determine the distance the bird flew.

40km/h x 4h = 160km

30km/h x 2,5h= 75km

Then add up the total distance: 160km + 75km = 235km

Next add up the total time: 4h + 2,5h = 6,5h

So in total the bird flew 235km in 6,5h. Now just divide both numbers by 6,5 as what you want to know is how far the bird got during an average hour.

Explanation: