Question

Define motion. What do you understand by the terms uniform motion and non uniform motion ? Explain with examples.

Answer 1

Motion is the process of something moving or changing place, or even just changing position.
Uniform motion:

Definition: Uniform motion is defined as the motion of an object in which the object travels in a straight line and its velocity remains constant along that line as it covers equal distances in equal intervals of time, irrespective of the length of the time.

If a body is involved in rectilinear motion and the motion is uniform, then the acceleration of the body must be zero.

Example:

If the speed of a car is 10 m/s, it means that the car covers 10 meters in one second. The speed is constant in every second.Movement of blades of a ceiling fan.Non-Uniform motion:

Definition: Non-Uniform motion is defined as the motion of an object in which the object travels with varied speed and it does not cover same distance in equal time intervals, irrespective of the time interval length.

If a body is involved in rectilinear motion, and if the motion is non-uniform, then the acceleration of the body must be non-zero.

Example:

If a car covers 10 meters in first two seconds and 15 meters in next two seconds.The motion of a train.

Answer 2

Answer:

Explanation:

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● Motion : - An object is said to be in motion when it changes it's position with time , with reference to its immediate surroundings. Example - Moving of a train.

● Uniform motion : - An object is said to be in uniform motion when it moves along a straight path and covers equal distances in equal intervals of time. Example - Simple pendulum.

● Non - uniform motion : - An object is said to be in non - uniform motion when it does not move along a straight path and covers equal distances in unequal intervals of time. Example - A stone dropped from the top of a building.

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