What is uniform motion?

Answer 1

A ball rolling at a constant speed at the same rate of speed on a still surface.

Answer 2

As shown by Einstein's Principle of Relativity, motion is a necessarily relative concept: what appears to be moving from one frame of reference may not appear to be moving, or moving in the same way, from another frame of reference. From a physical point of view, all frames of reference are given equal validation. So uniform motion itself will also be a relative concept. If an object A is in uniform motion relative to another object B, then from B's view there appear to be no force applied to A; i.e. it appears to be neither accelerating nor decelerating, nor changing directions or moving in a curve. The same should apply vice versa.

translation: uniform motion is something moving in a straight line at a consistent speed

Answer 3

Constant velocity is known as uniform velocity, which is achieved when the net force (or resultant force) of a body is zero i.e. there is no external forces causing the body to accelerate or decelerate.

To look at it from a Calculus dimension:

If the derivative of the position vector with respect to time = 0 in an inertial reference frame.

i.e. it is moving with constant speed in a direction in an inertial reference frame.

I prefer the following statement which is equivalent to the above:

If the second derivitive (i.e. acceleration) of the position vector is 0 in any one inertial frame, then it is 0 in all inertial frames and there exists at least oneinertial frame in which the first derivitive (i.e. velocity) of the position vector is 0.

In short:

Neither speed nor direction of motion changes.

Answer 4

if an object travels equal distance in equal intervals of time then the motion is said to be uniform.

Answer 5

Constant motion is a mechanics terms meaning the quantity that is conserved throughout the motion. Examples of constant motion are specific linear momentum and specific energy.

Answer 6

An object that is speeding up at a steady rate.

Answer 7

It means constant speed in a straight line.

Answer 8

Earth, Hands on a clock, etc.

Answer 9

if a body can cover equal distance in equal intervals of time then the body is said to be with uniform motion