Question

uniform motion in straight line. explain. ​

Answer 1

Uniform motion in straight line

→ Uniform generally means that the motion is periodic or remains constant with the change in time .

→ Uniform motion is defined as the motion where the object covers equal distances in equal intervals of time .

→ Uniform motion means that the object will cover the same distance in the given time .

→ Motion is uniform and in a straight line means that the body does not deviate and travels in a straight path while covering equal distance in equal interval of time .

→ Example :- When a car travels at the speed of 20 m/s uniformly , it means that the car travels exactly 20 m every second .

→ When a car travels 30 m in the first second and then the next second another 30 m , then the speed is non-uniform .

→ Non uniform motion refers to the motion in which an object covers different distances in the equal intervals of time .

Answer 2

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An object is said to be in uniform motion if its velocity is uniform when it undergoes equal displacement in equal intervals of time however small these intervals may be.

following are the important feature of uniform motion

• for uniform motion along a straight line in a given direction the magnitude of displacement is equal to actual distance covered by object
• the velocity in uniform motion does not depend upon the time interval
• the velocity in uniform motion is independent of choice of origin
• the velocity of an object is taken to be positive if the object is moving towards the right of origin and is taken to be negative if the object is moving towards the left of origin
• no force is required for an object to be in uniform motion
• the average and instantaneous velocity have some values in a uniform motion