# Introduction to Motion

When we speak about movement or rest, we are referring to a place called the origin. So, in terms of position change, we have two values that may be used to represent that transition in location. These are - the concepts of distance and displacement. So, what's the distinction between the two?

When it comes to distance, it's characterized as the entire length of the path traveled during the motion. It can only be expressed in terms of magnitude. Displacement, on the other hand, is the smallest distance between the starting and ending position. For a comprehensive description, both magnitude and direction are required.

Motion may be defined as a change in an object's location with regard to time. Motion can be seen in a book dropping off a table, water running from a faucet, rattling windows, and so forth. Even the air we breathe is alive with movement! The cosmos as a whole is in motion. We live in a cosmos that is always changing. The atom, which is the basic particle of matter, is also in continual motion. Every physical process in the cosmos involves some form of motion. Motion might be fast or slow, but motion is always there. Because of its relevance in the physical world, it is critical that we pay close attention to the study of motion. The following words are commonly used to describe motion:

1. Distance
2. Displacement
3. Speed
4. Time

The terms distance and displacement can be utilized to express the shift in location, as previously mentioned. Now, if someone asks how far A is from B, we can't offer a precise response since it depends on the path traveled. It might be the same for all three ways or it could be different. However, because the two locations are connected by a straight line, we can always offer a definitive answer for displacement. To put it another way, displacement is just the smallest distance between two locations, in this instance Path 2. It also has a certain direction from A to B, as can be seen.

It's possible that we've noticed that various items move in different ways. Some items move in a curved course, some in a straight line, and a few more in a random pattern. Motion is divided into three categories based on the nature of the motion: 1. Linear Motion
2. Rotary Motion
3. Oscillatory Motion

## Linear Motion

The molecules in linear motion travel from one location to the other in a straight path or a curved route. The linear motion is further split based on the route of motion as follows a similar:

1. Rectilinear Motion - The motion follows a straight line route.
2. Curvilinear Motion - The motion follows a curved route.

Railroad motion, soccer motion, and the motion of a vehicle on the street are all instances of linear motion.

## Rotatory motion

When a body spins on its own axis, it is said to be in rotatory motion. The following are some instances of rotatory motion:

• The earth revolves around the sun under its own axis, which is an indication of rotational motion.
• The rotation of the tires and the steering wheel around their own axis when driving an automobile is an explanation of rotatory motion.

## Oscillatory Motion

Oscillatory Motion is a type of oscillation. The oscillation of a body about its mean position is known as oscillatory motion. Here are a few instances of oscillatory motion:

• When a kid is pushed on a swing, the swing swings back and forth around its mean position.
• The swinging of a clock back and forth about its mean position exhibits oscillatory motion.
• When a guitar string is strummed, it travels back and forth by its mean position, creating an oscillatory action.
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