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Answered 2009-05-08 18:00:36

Velocity is a vector. A vector has a magnitude and a direction. The scalar or magnitude portion of velocity is speed. Velocity is a constant only when both the speed and direction are not varying. Hence, when the speed is changing, the velocity cannot be a constant.

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No. Speed is the magnitude of the velocity. If either or both the speed and direction vary, the velocity is not constant.

No, velocity is a vector quantity and measures both speed and direction. If the velocity of an object is constant then that would also mean the speed would stay constant.

No. Velocity is the combination of speed and direction. If it is constant, then both the speed and direction are constant. On the other hand, velocity can vary even is speed is constant, since the direction can change.

Yes, the velocity of a constantly (or not constantly) accelerated object will vary. Velocity is distance per unit time with a vector. It's speed (distance per unit of time) in a given direction. Under constant acceleration, the velocity is changing at a constant rate. But the velocity is changing. It is varying. The object could be speeding up or it could be slowing down. Or it could be changing direction. Any of these change velocity. An object that is experiencing constant acceleration will have its velocity varying. Why wouldn't it have?

Yes. In order for an object's velocity to be constant, its speed and direction of motion must both be constant. An object moving in a circle, for example, has varying velocity, even if its speed is constant. This situation is known as "uniform circular motion," and the acceleration in this case is called "centripetal [center-seeking] acceleration."

An object with constant velocity has no acceleration.

No. An object traveling at a constant velocity is not accelerating.

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.

Yes. Velocity is a quantity that has both magnitude and direction. Speed is the magnitude of velocity. If speed is constant but the direction is changing, then the velocity is changing. An example is a car turning a corner without slowing down.

Consider an object turning in a circle at a constant speed. Because velocity is not just the value of speed, but also the direction in which the object is moving, the velocity would not be constant.

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

A falling object doesn't have constant velocity.It has constant acceleration. That means that its velocity increases at a steady (constant) rate.The rate is called the "acceleration of gravity".

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

Yes. Velocity combines the descriptions of speed and direction. If the direction of motion is changing, like moving along a curve or bouncing off a wall, then the velocity is changing, even though the speed may be constant.

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.

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

An object changing its velocity by 10 m/s in each consecutive second is known asconstant acceleration since the velocity is changing by a constant amount each second. Although an object with a constant acceleration should not be confused with an object with a constant velocity.

Acceleration is change of velocity. If velocity is constant ... "no change" ... then acceleration is zero.

Acceleration is the rate of change of velocity. Constant velocity means zero acceleration.

Yes, it is constant at zero. I.e. there is no acceleration so velocity must be constant

An object moves with constant velocity when there is no net force acting upon it. If there are no forces acting on an object, or if the forces acting on it "cancel out" leaving a net force of zero acting on the object, it will have zero acceleration. With a zero acceleration, the velocity of the object will be constant.

No. Acceleration is any change of velocity.But its speed can be constant.

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