State the type of motion represented by the given graph.
Can you suggest real life examples about the motion of a body from the following velocity$-$time graphs ?
$(a)$ Write differences between speed and velocity.
$(b)$ The speed of a moving object is $x m s ^{-1}$. Its velocity is $y m s ^{-1}$. What is the similarity observed ?
A body is moving along a circular path of radius $R$. Find the displacement of the body when it completes half a revolution.
What can you say about the motion of a body if its displacement$-$time graph is a straight line parallel to the time axis ?