In our day-to-day life, we see several motions of living and non-living objects, whether birds, animals, fishes, cars, trains, etc. So, what common do you find in their motions? Show
Also, we say that an object can be uniform or non-uniform motion. However, a question arises: why do we categorise the motion of an object into two types? So, how do we differentiate between uniform and non-uniform motion? Well! There are various parameters, such as average speed, distance covered by an object, and so on. Also, we will follow the mathematical approach, like graphs on each type of motion. Now, let us start our article with the definition of both types of motion, along with illustrating examples on both. Definition of Uniform and Non-uniform MotionThe type of motion in which the object travels in a straight line with uniform speed, is called Uniform motion. This means that the velocity of the body remains constant as it covers equal distances in equal intervals of time. In the case of uniform rectilinear motion, the acceleration of the body will be zero. Here, the average speed of the object will be equal to the actual speed. Examples of uniform motion are a car moving with constant velocity, a boy running in a straight path with constant speed etc. The type of motion in which the object travels with a varied speed is called Non-Uniform Motion. This means that the object does not cover equal distances in equal time intervals. If the motion is not consistent in the case of rectilinear motion, the acceleration of the body will be non-zero. For example, the motion of a vehicle is an oscillation of a pendulum. Non-uniform motion is also called accelerated motion. Differentiate between Uniform and Nonuniform MotionBelow is the tabular difference between uniform and nonuniform motion:
How is Uniform Motion Different from Nonuniform Motion?From the above table, we understand that in uniform motion, the velocity of the body travelling in a straight line remains the same. Also, the distance travelled by a moving object is the same at several time intervals. Thus regardless of the time length, the motion is said to be uniform. Below is the distance-time graph for the uniform motion: (Image will be Uploaded soon) The graph given above, it is indicated that there is a shift of 10 meters every minute, as there is a constant velocity with respect to time. Slope = dxdt = Distance/time Here, we will prove that velocity ‘v’ is constant. So, let us take some values:
Using the above equation, calculate the value of velocity: Similarly, for the remaining values:
We find that the value of velocity remains the same, which means the motion is uniform. Now, let us understand what nonuniform motion is. We studied from the above text a body that covers unequal distances in equal intervals of time; it possesses a nonuniform motion. Below is the formula for unequal distances in equal intervals of time: For example, a ball is freely falling and moves 6 metres in the 1st second, 12 metres in the 2nd second, and so on. Thus, a freely falling ball will cover smaller distances in the first ‘1 second’ and larger distances in the later ‘1 second’ intervals. Hence, we can say that the motion of a freely falling ball is an example of a non-uniform motion. The distance-time graph of the non-uniform motion is a curved line. Non-Uniform motion is also known as accelerated motion. Below is the diagram of the motion having a nonuniform motion:
Image: “Distance-time graph of a body making nonuniform motion” Now, let us go through examples of uniform and nonuniform motion. 1. Uniform motion examples
2. Non-Uniform Motion Examples Most of the motions around us are non-uniform in nature. Some of them are
Quiz on Non-uniform Motion1. How Can You Tell that an Object Exhibits Non-uniform Motion from a Position-time Graph?
Ans: Option b Explanation: The graph for a body possessing nonuniform motion is a curved line. Question Only a and b are correctOnly c is correctAll of those are correct except cOnly d is correctHint:All of those are correct except cThe correct answer is: All of those are correct except cIn non-uniform motion, speed of the object changes along the straight line in unequal manner either unequal distance in equal time interval or vice versa and we calculate average speed in case of non-uniform motion.The SSC is going to release the SSC CHSL notification on 5th November 2022. Candidates who have completed Higher Secondary (10+2) can appear for this exam for recruitment to various posts like Postal Assistant, Lower Divisional Clerks, Court Clerk, Sorting Assistants, Data Entry Operators, etc. The SSC Selection Process consists of Computer Based Exam, Descriptive Test and Typing/Skill Test. Recently, the board has released the SSC CHSL Skill Test Result for the 2020 cycle. The candidates who are qualified are eligible to attend the document verification. |