Question

A car travels a certain distance with a speed of 50 km/h and returns with a speed of 40km/h. Calculate the average speed for the whole journey.

Please explain your answer.

Answer 1

Answer:

average speed-here the distances are equal,we have the formula of finding average speed when distance is equal as V1*V2/V1+V2. if we substitute the values here we get 50*40/50+40 which gives 200/90=20/9 kmph which when converted into m/s gives 8.

❤Adyasha here❤

Answer 2

Explanation:

average speed = 2V1 V2/V1+V2 = 2*40*50/40+50= 2*40*50/ 90 = 4000/90= 4.4km/hr