Whether we are humans, animals, birds, fish, trains, cars, or anything else, we are surrounded by a variety of living and non-living things. Some of these things move, while others remain stationary. A body is said to be in motion when it constantly changes its position in relation to time and a stationary object used as a reference point, while an object is said to be at rest when it does not change its position in relation to time and a stationary object used as a reference point.
If you are driving a car at a constant pace, the automobile’s position changes constantly with regard to time and your fixed object, such as your home, office, or school, the car is in motion. There are two forms of motion: uniform motion and non-uniform motion.
Uniform motion is a type of motion in which an object moves in a straight path at a constant speed. This means that the body’s velocity remains constant because it travels the same distance in the same amount of time. The body’s acceleration will be 0 in the event of uniform rectilinear motion. The object’s average speed will be equal to its real speed in this case. A car travelling at a constant pace, a boy sprinting in a straight line at a constant speed, and so on are examples of uniform motion.
More Examples of Uniform Motion:
An aeroplane travelling at a constant height and speed.
An automobile is travelling at a constant speed down a straight, level route.
A ship is sailing in a straight path at a constant speed.
A train is moving steadily along the straight rails.
Cases of uniform motion:
There is no change in velocity.
There has been no acceleration.
There is no difference in speed.
There will be no change in direction.
Uniform circular motion
Uniform circular motion occurs when an object moves in circles at a constant speed. The fan is an example of a uniform circular motion. When you turn on the fan and wait for it to achieve its set speed, the fan will move in a consistent circular motion. As a result, the fan spins in a circular motion. In this case, the velocity is not constant since the speed is constant, but the direction is not constant or changes. Similarly, when going in a circle around the room, your direction changes all the time. That is why velocity is neither constant nor uniform.
Non-Uniform Motion is a type of motion in which an object moves at different speeds. This indicates that the object does not travel the same distance in the same amount of time. In the case of rectilinear motion, the acceleration of the body will be non-zero if the motion is not consistent. A vehicle’s motion, for example, is an oscillation of a pendulum. Accelerated motion is another name for non-uniform motion.
More Examples of Non-uniform Motion:
The majority of the motions we see around us are non-uniform. Those are:
A running horse
A man competing in a 100m dash.
A springy ball
A car collides with another car
A plane flies through the clouds
Taking a box down a path
A bus passes through the market on its way to its destination.
A train approaching its final destination
Cases of non-uniform motion:
When the speed of the vehicle changes,
When there is a shift in direction
When both the direction and the speed of a vehicle change
Non-uniform circular motion
Non-uniform circular motion is defined as when a particle’s speed changes while revolving in a circle. Both the particle’s speed and angular velocity fluctuate when it moves in a non-uniform circular motion.
Difference between Uniform and Non-Uniform Motion
A uniform movement is one in which the body crosses the same routes for the same amount of time. The uniform linear motion is a constant-velocity motion because its speed is determined by the distance travelled in a unit of time. In this situation, the moving body’s actual and average speeds are the same.
The term “non-uniform movement” refers to a movement in which the body crosses multiple routes at the same time intervals. Uniformly accelerated linear motion is defined as movement along a straight line with constant acceleration. The average speed is not the same as the object’s average speed. Free fall, a car with the engine turned off, a sphere on a steep incline, and so on are examples.
The body rotates at a steady speed around a set axis or centre point in uniform circular motions. The radial distance is always the same. Variable angular speed is a feature of nonuniform circular motion, as is some radial acceleration.