A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of $3.0\, m s^{-2}$ for $8.0 \,s$. How far does the boat travel (in $m$) during this time ?

An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.

A train is travelling at a speed of $90\, km \,h^{-1}$. Brakes are applied so as to produce a uniform acceleration of $- 0.5\, m s^{-2}$. Find how far(in $m$) the train will go before it is brought to rest.

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

A driver of a car travelling at $52\, km\, h^{-1}$ applies the brakes and accelerates uniformly in the opposite direction. The car stops in $5\, s$. Another driver going at $3 \,km \,h^{-1}$ in another car applies his brakes slowly and stops in $10\, s$. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied ?