Question

A car travels a certain distance with a speed of 40km h–1

and returns with a speed 40 km h–1

.

Calculate the average speed for the entire journey?
plz very important step by step

Answer 1

Answer:

80.2m/s

Explanation:

Answer

To complete 1km distance with speed =40kmhr it tkes time t

1

=

40

Average speed=

40kmh-1/40kmh-1

=80.2m/s