Mention the nature of motion of a body if its displacement$-$time graph is a straight line parallel to the time axis.

What is the slope of the displacement $-$ time graph when the body has uniform motion?

Why does $(second)^{2}$ occur in the unit of acceleration?

Derive the following equations for a uniformly accelerated motion:
$(i)$ $v = u + at$
$(ii)$ $S = ut + \frac{1}{2}at^2$
$(iii)$ $v^2 - u^2 = 2aS$, where the symbols have their usual meanings.

When is an object in motion considered to be a point object?

$A$ cyclist goes once around a circular track of diameter $105 \, m$ in $5 \, minutes$. Calculate his speed. (in $m/s$)