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Motion in 2D

What is Motion in 2D?

Motion is the change of position of an object or a body. It could be a one-dimensional, two-dimensional, or three-dimensional motion. The motion of an object or particle in a plane is referred to as two-dimensional motion. Motion in two dimensions can further be divided into circular, projectile, and planar motion. Their examples include: a boy throwing a ball towards his friend is an example of projectile motion; rotating ceiling fan is an example of circular motion. Now, how do we simplify motion in two dimensions? We divide it into one dimension, correlating the equations and then calculating the unknowns. 

Introduction to 2D Motion

What is Motion?

The rate of change of position is known as motion. It can be different physical quantities like displacement, acceleration, velocity, speed, and so on. A car accelerating, an apple falling from a tree, water gushing out of a tap, etc. are all examples of motion. Every physical process around us is in some kind of fast or slow motion. Take, for example, distance. It is the change in position of an object with respect to time. Acceleration, on the other hand, is the change in velocity of an object with respect to time. Be it velocity, distance, acceleration, or displacement, all are used to describe motion. 

What are the Types of Motion?

Depending on the type of motion an object goes through, motion can be classified into different types, which include:

  • Linear motion of objects or rectilinear motion
  • Rotational Motion of an object
  • Oscillatory Motion 

The rotation of a car wheel, a pendulum swinging to and fro, a ball rolling from an inclined surface, a car accelerating at a constant speed or variable speeds are all examples of the different types of motion listed above. Let us further understand this with a few more examples. 

Explanation of the Types of Motion with Examples

Linear or Rectilinear Motion

As the name suggests, a linear or rectilinear motion is the motion of an object in a straight line. We witness several examples of linear motion in our day-to-day lives. Some of these include the following: 

1. A Sliding Door

A sliding door is a perfect example of linear motion. The to-and-fro motion of the sliding door allows a person to enter or close the door. 

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