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2010-07-14 07:03:30
2010-07-14 07:03:30

Velocity is a vector quantity in which both magnitude and direction must be taken into consideration. For an object to have constant velocity, it is necessary that both the magnitude and the direction of the velocity must be constant. Even if either magnitude or direction is variable, velocity will not remain constant. On the other hand, speed remains constant if direction is changed and magnitude is kept constant, as speed is a scalar quantity.

For an object to have constant velocity, it is necessary that the object move at a constant speed and not change course. That object must move in a straight line to have a constant velocity.

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Related Questions


A car moving at constant speed in a straight line is also moving at constant velocity.


A car moving with a constant speed is moving with a constant velocity if and only if it is travelling along a straight line.


Yes. An object moving in a straight line at constant speed has constant velocity.


Anything with constant velocity is moving at a constant speed in a straight line. Neither of these characteristics describes the motion of the moon.


Velocity is Speed in a given direction. Moving at constant velocity is equivalent to say moving with a constant speed in a specified direction. So, moving at constant velocity implicitly means moving with constant speed.


When it's moving in a straight line at a constant speed. And it has nothing to do with my judgment or opinion. That's the definition.


It means moving at a constant speed ... not speeding up or slowing down ... and in a straight line.


It will have zero force BUT, it WILL have a constant velocity


No. Velocity combines speed and the direction of motion.Constant velocity is constant speed in a straight line.In circular motion, the velocity is always changing even if the speed is constant,because the direction is always changing.


It means moving at a constant speed ... not speeding up or slowing down ... and in a straight line.


a "body" "moving body" an "object" is moving with constant velocity. [OR] a "body" is moving with constant velocity.


Objects moving at constant speed in a straight line are said to be in equilibrium. That is there is no force acting on them. If a force was acting there would be aceleration and the velocity would change.


there is no acceleration if the body is moving with constant velocity


When acceleration is zero, then the object is moving in a straight line with constant speed. (That's the effective meaning of constant velocity.)


The net force on an object moving at a constant velocity is zero.


If the constant velocity is in a positive direction, the slope of a displacement-time graph will be a straight line with a positive slope, and the slope of the line will be the velocity.


Constant speed, moving in a straight line, zero acceleration, zero net force acting on it.


Zero velocity means the object has no speed, that is, it's not moving. Zero acceleration means the object is moving with constant speed in a straight line, that is, its velocity is not changing.


Acceleration is zero when the body is moving with a constant velocity. This is one of the newton's laws.


An object at rest has a constant velocity of zero. Both the object at rest and the object moving at constant velocity have zero acceleration.



If an object is moving away from you and there are no forces acting on it,then it continues moving in a straight line at constant speed.


"Uniform velocity" means constant speed in a straight line.That's a good working definition of zeroacceleration.


No. Velocity is a 'vector', which means it's a measurement that has both magnitude and direction. The magnitude is what we usually call the 'speed'. For an object moving in a circle, it could have constant speed ... the velocity could have constant magnitude ... but there's no way the whole velocity vector could be constant, because the direction is always changing. Constant velocity is very easy to recognize ... the object is moving at a steady speed, in a straight line.


A displacement vs. time graph of a body moving with uniform (constant) velocity will always be a line of which the slope will be the value of velocity. This is true because velocity is the derivative (or slope at any time t) of the displacement graph, and if the slope is always constant, then the displacement will change at a constant rate.



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