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Updated on 18th May, 2023 , 6 min read
Uniform motion is a sort of motion in which an object travels the same distance at the same rate. In a uniform motion, the velocity of the object stays constant.
In uniform motion, the object's velocity stays constant as it travels equal distances in equal time intervals. The uniform motion distance-time graph reveals a straight line.
Motion is the change in an object's position with respect to its environment over the course of a specific amount of time. The movement of an item in relation to another object that is stationary is referred to as "motion."
The motion of an object is described by four major parameters as follows:
An object moves in a manner known as "uniform motion" when it moves at a steady speed.
Here are some prevalent instances of uniform motion that you may encounter every day:
Uniform motion is a type of motion in which an object moves in a straight line with a constant speed. The formula for uniform motion is given by:
Distance = speed x time
Here, distance refers to the distance covered by an object in motion, speed refers to the constant speed at which the object is moving, and time refers to the duration of the motion.
The SI unit for distance meters (m), the SI unit for time is seconds (s), and the SI unit for speed is meters per second (m/s). Therefore, the SI unit for the formula of uniform motion is meters, which is the unit of distance.
To use the formula for uniform motion, the speed and time must be measured in their respective SI units. For example, if the speed of an object is 10 m/s, and it travels for 5 seconds, then the distance covered by the object can be calculated using the formula:
Distance = speed x time = 10 m/s x 5 s = 50 m
In this case, the distance covered by the object is 50 meters.
According to the definition of "uniform motion," it is a sort of motion in which an object travels the same distance in exactly the same amount of time.
An object moving in a non-uniform manner is one that covers varying lengths in the same amount of time. Discontinuous motion or accelerated motion are other names for non-uniform motion.
People frequently mix up uniform motion and uniform acceleration. In the later phenomena, the object has a constant acceleration in rectilinear motion, which means the object has a different speed every second, plainly defining that motion is changing.
Comparison Parameters |
Uniform Motion |
Non Uniform Motion |
Definition |
This is the motion of an object in which the object moves in a straight line and its velocity stays constant along that line as it covers equal distances in equal intervals of time, regardless of time duration. |
This form of motion is defined as an object moving at a variable speed and not covering the same distance in equal time intervals, regardless of the time interval duration. |
Average Speed |
The motion is similar to the actual speed of the object. |
The motion is different from the actual speed of the object. |
Rectilinear Motion |
It has zero acceleration. |
It has non-zero acceleration. |
Graph |
Distance-time graph shows a straight line |
Distance-time graph shows a curved line |
Distance |
Covers equal distances in the equal time interval. |
Covers unequal distances in the equal time interval. |
Solution:
Average speed = total distance covered / total time taken
Average speed = 90 km / 2 hours
Average speed = 45 km/h
Solution:
Distance travelled = speed x time
Distance travelled = 72 km/h x 5 hours
Distance travelled = 360 km
Solution:
Time taken = distance/speed
Time taken = 24 km / 8 km/h
Time taken = 3 hours
Solution:
Let the speed of the boat in still water be x km/h and the speed of the stream be y km/h.
Upstream speed = x - y km/h
Downstream speed = x + y km/h
15 km upstream in 3 hours gives: 3(x - y) = 15, which gives: x - y = 5
15 km downstream in 2 hours gives: 2(x + y) = 15, which gives: x + y = 7.5
Solving these equations, we get:
x = 6.25 km/h (speed of the boat in still water)
y = 1.25 km/h (speed of the stream)
Solution:
Time taken = distance / speed
Time taken = 420 km / 70 km/h
Time taken = 6 hours
Solution:
Time taken = distance / speed
Time taken = 360 km / 90 km/h
Time taken = 4 hours
Solution:
Distance travelled = speed x time
Distance travelled = 80 km/h x 4 hours
Distance travelled = 320 km
Solution:
Average speed = total distance covered / total time taken
Average speed = 24 km / 3 hours
Average speed = 8 km/h
Solution:
Let the speed of the boat in still water be x km/h and the speed of the stream be y km/h.
Upstream speed = x - y km/h
Downstream speed = x + y km/h
30 km upstream in 5 hours gives: 5(x - y) = 30, which gives: x - y = 6
30 km downstream in 3 hours gives: 3(x + y) = 30, which gives: x + y = 10
Solving these equations, we get:
x = 8 km/h (speed of the boat in still water)
y = 2 km/h (speed of the stream
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By - Nikita Parmar 2024-05-24 16:30:15 , 4 min readUniform motion is the type of motion where an object moves in a straight line with constant speed.
The characteristics of uniform motion are constant speed, constant velocity, and no acceleration.
Uniform motion is the type of motion where the speed is constant, while non-uniform motion is the type of motion where the speed changes over time.
The formula for uniform motion is distance = speed x time, where distance is the distance travelled, speed is the constant speed, and time is the duration of travel.
Some real-life examples of uniform motion are a car moving at a constant speed on a highway, a train moving on a straight track, and a satellite moving in a circular orbit.
The SI unit of uniform motion is meters per second (m/s).
Uniform motion can be represented graphically by a straight line on a distance-time graph, where the slope of the line represents the constant speed.
Uniform motion is important in physics because it provides a simple and idealized model for analyzing motion in many real-life situations.
Uniform circular motion is the type of motion where an object moves in a circular path with a constant speed, while uniform motion is the type of motion where an object moves in a straight line with constant speed.
No, an object cannot be in uniform motion if its direction changes because uniform motion involves moving in a straight line with constant speed, and changing direction implies a change in velocity and acceleration.