Study the speed$-$time graph of a body given below and answer the following questions
$(i)$ What type of motion is represented by $OA, AB$ and $BC$ ?
$(ii)$ Find positive and negative accelerations of the body.
$(iii)$ Find the distance travelled by the body from $A$ to $B$.
$(i)$ $OA$ is uniform acceleration, $A B$ is uniform motion (Zero acceleration $-$ moving with constant velocity) and $BC$ is negative acceleration (Retardation)
$(ii)$ Acceleration $=$ slope of graph between
$OA =(6-0) / 4=1.5 m s ^{-2}$
Negative acceleration $=$ slope of graph
$B C=(0-6) / 6=-1 m s^{-2}$
$(iii)$ Distance travelled is the area under the graph between
$A$ to $B=6 \times 6=36 m$
The velocity$-$time graph of a truck is plotted below
$(a)$ Calculate the magnitude of displacement of the truck in $15$ seconds.
$(b)$ During which part of the journey was the truck decelerating ?
$(c)$ Calculate the magnitude of average velocity of the truck.
What conclusion can you draw from the displacement$-$time graph of a body shown below ?
Explain with reason, which of the following graphs can possibly represent the motion of a particle observed in nature ?
Can you suggest real life examples about the motion of a body from the following velocity$-$time graphs ?
Why is the motion of an athlete moving along the circular path an accelerated motion ?