Is the statement "$A$ particle can have zero speed but non-zero velocity" true or false? Explain.

Which information cannot be drawn from average velocity?

$A$ car covers the first half of the distance between two places at $40 \text{ km/h}$ and the second half at $50 \text{ km/h}$. The average speed of the car is (in $text{ km/h}$)

If a body covers one-third of its total distance at speed $v_1$,the next one-third at speed $v_2$,and the last one-third at speed $v_3$,then the average speed will be:

Define speed. Define average speed.

If the average velocity of a particle moving on a straight line is zero in a time interval,then: