If the displacement of a body is proportional to the time elapsed,what type of motion does the body possess?

What is meant by uniform motion? Can you think of an example of a body in uniform motion?

Under what condition$(s)$ is the magnitude of average velocity of an object equal to its average speed?

What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis?

Two cars moving in opposite directions cover the same distance $d$ in one hour. If the cars were moving in a north-south direction,what will be their displacement in one hour?

Ravi told his friend that his house is $1 \,km$ toward south from the main Post Office. Express the displacement and the distance moved by the friend from the Post Office when he arrives at Ravi's house. Mention the reference point chosen by you.