If an object is moving at unifrom acceleration what is its velocity?

Answer 1

A body moving at a uniform speed may have a uniform velocity, or its velocity could be changing. How could that be? Let's look. The difference between speed and velocity is that velocity is speed with a direction vector associated with it. If a car is going from, say, Cheyenne, Wyoming to the Nebraska state line at a steady speed of 70 miles per hour, its velocity is 70 miles per hour east. Simple and easy. Uniform speed equals uniform velocity. (Yes, I-80 isn't perfectly straight there. Let's not split hairs.) But a car moving around a circular track at a uniform speed is constantly changing direction. Its speed is constant, but its velocity is changing every moment because the directionit is going is changing. Speed is uniform, but velocity isn't. As asked, uniform speed is a uniform distance per unit of time. And this will yield a uniform distance per unit of time in its velocity, but the direction vector may be uniform or it may be changing each moment, as illustrated.

Answer 2

The nature of uniform motion for a velocity-time graph is graphed as a horizontal straight line.

Uniform motion is unaffected by acceleration (line does not curve), which means that it goes up or down in a constant rate on a position-time graph.

Velocity= the slope of a position-time graph.

So, if the motion is constant on a position-time graph then the velocity of the uniform motion is constant on a velocity-time graph.

Lauren "Physics above all!"

Answer 3

Its velocity is increasing or decreasing (its velocity is not constant).