Two cars $A$ and $B$ have their displacement-time graph as given below. Which car has a greater velocity?

$A$ frog hops along a straight line path from point $A$ to point $B$ in $10 \, s$ and then turns and hops to point $C$ in another $5 \, s$. Based on the provided number line,calculate the average speed and average velocity of the frog for the motion between: $(a)$ $A$ to $B$ $(b)$ $A$ to $C$ (through $B$).

$A$ boy hits a football high up into the air. He runs and catches the football before it hits the ground. Which of the two,the boy or the football,has had greater displacement?

Can you suggest real-life examples of the motion of a body from the following velocity-time graphs?

$(a)$ Define acceleration.
$(b)$ $A$ stone describes a circular path with a constant speed. State the type of motion of the stone.

The velocity$-$time graph of a truck is plotted below.
$(a)$ Calculate the magnitude of displacement of the truck in $15$ seconds.
$(b)$ During which part of the journey was the truck decelerating?
$(c)$ Calculate the magnitude of average velocity of the truck.