Account for the following:
$(a)$ What is the shape of the path of a body when it is in uniform motion?
$(b)$ Give one example of non-uniform motion.
$(c)$ Two cars $A$ and $B$ have their $x-t$ graph as shown in the figure. Which has greater velocity?
$(d)$ What is the quantity which is measured by the area occupied below the velocity-time graph?
$(e)$ $A$ body is moving with a velocity of $10 \, m/s$. If the motion is uniform,what will be the velocity after $10 \, s$?

(N/A) The path of a body in uniform motion is a straight line.
$(b)$ An example of non-uniform motion is a car moving on a crowded city road where its speed changes frequently.
$(c)$ The velocity is determined by the slope of the $x-t$ graph. $A$ steeper slope indicates a higher velocity. Since the slope of line $A$ is greater than the slope of line $B$,car $A$ has a greater velocity.
$(d)$ The area under a velocity-time graph represents the magnitude of the displacement of the body.
$(e)$ In uniform motion,the velocity of the body remains constant over time. Therefore,if the body is moving with a velocity of $10 \, m/s$,its velocity after $10 \, s$ will still be $10 \, m/s$.