The following displacement $-$ time graph shows the positions of a body at different times, Calculate the velocity of the body as it moves from : $(i) A-B \,(i i) B-C$ $(iii)$ $C-D$.
Velocity is given by the slope of the graph,
$(i)$ $\quad V _{ AB }=\frac{(3-0)}{(5-2)}=1 m s ^{-1}$
$(ii)$ $\quad V _{ BC }=\frac{(0)}{(7-5)}=0 m s ^{-1}$
$(iii)$ $\quad V_{ CD }=\frac{(0-3)}{(10-7)}=-1 m s ^{-1}$
How can you find the distance travelled by body in uniform motion from the velocity$-$time graph ?
What can you say about the motion of an object whose distance time graph is
$(i)$ a straight line, parallel to the time axis ?
$(ii)$ a straight line passing through the origin making an angle with the time axis ?
"The direction in which an object moves is given by the direction of velocity of the object and not by the direction of acceleration". Give an example to justify this statement
Can you suggest real life examples about the motion of a body from the following velocity$-$time graphs ?
What is meant by free fall ? Two bodies, one of mass $1\,g$ and other of mass $1\, kg$ are dropped from the same height in vacuum. Compare the two time intervals in which the two bodies will hit the ground.