A car after completing its journey returns to its original position.Name two physical quantities which are zero of the car and explain why?
1 Answer
Explanation:
Displacement is the total distance an object is from its starting position. Since the car has come back to its starting position, Its displacement is 0.
Velocity is defined as the change in position divided by the time of travel. So Velocity is displacement over time. Since displacement is already zero, velocity is also 0.
To be more clear, one might say that the "average velocity" is zero. Over the course of the trip the instantaneous velocity will be non-zero. However, if we want to compute the average of all of the motion, some is away from the starting point and some is back towards the start. The velocities over shorter time intervals will be positive when it moves away and negative when it moves back toward the start. But if we take them all together, it appears that nothing changed.
