A girl running a race accelerates at $2.5\, m s ^{-2}$ for the first $4\, s$ of the race. How far does she travel in this time ?

What does the slope of a displacement$-$time graph represent ? Can displacement$-$time sketch be parallel to the displacement axis ? Give reason to your answer.

The speed$-$time graph of a body is a straiaht line parallel to time axis. The body has

What is the relation between distance and time

$(i)$ when body is moving with uniform velocity ?

$(ii)$ when body is moving with variable velocity ?

Diagram shows a velocity$-$time graph for a car starting from rest. The graph has three sections $A B$, $B C$ and $C D$

$(i)$ From a study of this graph, state how the distance travelled in any section is determined.

$(ii)$ Compare the distance travelled in section $BC$ with distance travelled in section $A B$.

$(iii)$ In which section car has zero acceleration ?

$(iv)$ Is the magnitude of acceleration higher or lower than, that of retardation ? Give reason.