State whether the following statement is true or false:
In one-dimensional motion,the average velocity and the instantaneous velocity are unequal.

The numerical ratio of displacement to distance for a moving object is

State whether the following statement is true or false:
Kinematics deals with the motion of non-living objects without taking into account the cause of their motion.

If the displacement $-$ time graph for a particle is parallel to the time axis, what is the velocity of the particle?

If the acceleration of the particle is constant in magnitude but not in direction,what type of path does the particle follow?

The distance-time graph of two trains is given below. The trains start simultaneously in the same direction.
$(i)$ How much ahead of $A$ is $B$ when the motion starts?
$(ii)$ What is the speed of $B$?
$(iii)$ When and where will $A$ catch $B$?
$(iv)$ What is the difference between the speeds of $A$ and $B$?
$(v)$ Is the speed of either train uniform or non-uniform? Justify your answer.