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If an object changes its speed by varying amounts in equal time intervals while moving along a straight track, it is said to be in:
Uniform motion
Non-uniform motion
Zero acceleration
Constant velocity
Non-uniform motion
An object undergoes non-uniform motion when its velocity changes by unequal amounts in equal intervals of time. This implies that the motion is accelerated because the rate of change of velocity is not constant or is non-zero.
An object undergoes non-uniform motion when its velocity changes by unequal amounts in equal intervals of time. This implies that the motion is accelerated because the rate of change of velocity is not constant or is non-zero.
Driving a car in heavy city traffic where you constantly speed up, slow down, and stop at different intervals is a classic example of non-uniform motion.
a=t2тАЛтИТt1тАЛv2тАЛтИТv1тАЛтАЛ тАФ acceleration formula indicating change in velocity over time
vavgтАЛ=Total┬аTimeTotal┬аDisplacementтАЛ тАФ average velocity calculation
In linear motion, velocity is defined as v=dtdxтАЛ. When the change in velocity ╬Фv is not proportional to the time interval ╬Фt, the instantaneous acceleration a=dtdvтАЛ is non-zero and often variable. This lack of constant proportionality characterizes non-uniform motion.
Non-uniform motion implies the presence of acceleration.
The distance-time graph for non-uniform motion is a curved line, not a straight line.
Average velocity and instantaneous velocity are generally not equal in non-uniform motion.
Movement of a vehicle in traffic
A ball rolling down an uneven slope
Uniform motion is defined by constant velocity (a=0), whereas non-uniform motion requires aюАа=0.
Option A (Uniform motion) refers to covering equal distances in equal time intervals.
Option C (Zero acceleration) is the defining condition for uniform motion, not non-uniform.
Option D (Constant velocity) requires both constant speed and constant direction.
B is correct тАФ An object that changes its speed by varying amounts in equal time intervals exhibits non-uniform motion.
Always check the shape of the distance-time graph; a straight line indicates uniform motion, while a curve indicates non-uniform motion.
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