Question

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

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Answer 1

Answer:

To complete 1km distance with speed =50kmhr it tkes time $t_{1} = \frac{1}{50}s$

To complete 1km distance with speed =40kmhr it tkes time $t_{1} = \frac{1}{40}s$

Average speed = $\frac{1 + 1}{(1/50) + (1/40)}$ = 44.44m/s

@MissEleGant