Under what condition$(s)$ is the magnitude of average velocity of an object equal to its average speed?

What is the nature of the distance-time graphs for uniform and non-uniform motion of an object?

$A$ trolley,while going down an inclined plane,has an acceleration of $2 \,m \,s^{-2}$. What will be its velocity (in $cm \,s^{-1}$) $3 \,s$ after the start?

Which of the following is true for displacement?

State which of the following situations are possible and give an example for each of these:
$(a)$ An object with a constant acceleration but with zero velocity.
$(b)$ An object moving with an acceleration but with uniform speed.
$(c)$ An object moving in a certain direction with an acceleration in the perpendicular direction.

$A$ bus decreases its speed from $80 \, km \, h^{-1}$ to $60 \, km \, h^{-1}$ in $5 \, s$. Find the acceleration (in $m / s^2$) of the bus.