Question

A car moves from X to Y with a uniform speed u and returns to X with a uniform speed v. The average speed for this round trip is

Answer 1

Answer:

the average speed for the trip is

= average speed

= (u+v)/2

but the average velocity will be 0 since the displacement is 0.

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Answer 2

Answer:

car travell with uniform speed u

there is no change in speed inthat trip

therefore average speed will be u