If the displacement$-$time graph for a particle is parallel to time axis, what is the velocity of the particle ?
What conclusion can you draw from the displacement$-$time graph of a body as shown below ?
$(a)$ Derive second equation of motion $S=u t+\frac{1}{2} a t^{2}$ graphically where the symbols have their usual meanings.
$(b)$ A car accelerates uniformly from $18\, km h ^{-1}$ to $36\, km h^{-1}$ in $5$ seconds. Calculate the acceleration and the distance covered by the car in that time.
A body can have zero average velocity but not zero average speed. Justify.
An electric train is moving with a velocity of $120\, km h^{-1} .$ How much distance will it corer in $30 \,s$ ?