Question

An object can have zero average velocity but cannot have zero average speed. Justify with example

Answer 1

velocity =displacement /time
speed =distance/ time
and as we know displacement can be 0 but distance can't so,it's completely clear that average velocity can be 0 but average speed should not be 0.

hope it helps:)

Answer 2

Velocity = Displacement/Time

Speed = Distance/time.  And as you know that displacement can be 0 but the distance can't so.... Its completely clear that average speed is 0 but the average speed should not be zero.

hope you like the answer.