what is motion what is motion
Answers
Motion, in physics, change with time of the position or orientation of a body. ... In both cases all points in the body have the same velocity (directed speed) and the same acceleration (time rate of change of velocity). The most general kind of motion combines both translation and rotation.
Answer:
We can define motion as the change of position of an object with respect to time. A book falling off a table, water flowing from the tap, rattling windows, etc all exhibit motion. Even the air that we breathe exhibits motion! Everything in the universe moves. We live in a universe that is in continual motion. The fundamental particle of a matter that is the atom is in constant motion too. Every physical process in the universe is composed of motion of some sort. The motion can either be swift or slow, but motion exists. It is important that we give due attention to the study of motion because of its importance in the physical world. Motion is mainly described in terms of the following terms:
Distance
Displacement
Speed
Time
As discussed earlier, distance and displacement are used to describe the change in position. Now if someone asks what the distance between A and B is, we can’t give a definite answer because it depends on the path taken. It may or may not be the same for all three paths. But for displacement, we can always give a definite answer as it is a straight line joining the two points. In other words, displacement is nothing but the shortest distance between the two points, which in this case is Path 2. Also, it has a particular direction from A to B, as we can see.
So now that we have a basic idea of both we will try to solve an example: Suppose the distance between two cities A and B is ‘d’. A person goes from A to B and returns. Calculate distance travelled and displacement.
Distance travelled = Total path length covered
= d + d
= 2d
Displacement is measured as the shortest distance between the initial and final position. In this case, both are the same and hence, displacement is also zero.
So for a motion, can displacement be greater than the distance covered? Think about it, and if not can it be equal?
You may also want to check out these topics given below!
Force And Motion
Change In State Of Motion
Newton’s Laws of Motion
Motion In Physics