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Answered 2013-02-06 14:42:43

The velocity of object always changes with wanted or unwanted outer forces.

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Wanted and unwanted outer forces will always change the velocity of an object.

Force changes the velocity of an object by acceleration, a=F/m.

Then the object accelerates; its velocity changes.Then the object accelerates; its velocity changes.Then the object accelerates; its velocity changes.Then the object accelerates; its velocity changes.

Having a net force always leads to an acceleration due to Newton's famous law; F = m * a. An acceleration is a change of velocity therefore a net force will always change the velocity of an object.

This is not always the case. But if an object moves in a circle, at constant speed, its velocity will change. Velocity is a vector - consisting of the magnitude (the speed), and a direction. So by definition, if the direction changes, the velocity changes - you have a different vector.

An unbalanced group of forces acting on an object always changes the object's velocity.

Acceleration is the rate at which the velocity of an object changes over time.

An object accelerates if its velocity changes. More precisely, "acceleration" is the rate of change of velocity (how quickly velocity changes), or in symbols, dv/dt.

An object is accelerating if its speed or direction changes with time. Since speed and direction are the components of velocity, an object is accelerating if its velocity changes with time.

No, velocity is the instantaneous speed of an object, the rate of change would be the acceleration of the object.

No, acceleration is change in velocity. (And velocity is speed in a certain direction.) If an object slows down, then it is changing velocity and thus accelerating. (In this case, the acceleration is negative.) If an object changes direction, then it's velocity changes, so this is also acceleration. (This is centripetal acceleration.)

No. As used in physics, the word "acceleration" means that THE VELOCITY CHANGES. More precisely, it refers to how quickly the velocity changes, in symbols, dv/dt.

Velocity. A change in VELOCITY will always indicate the acceleration of an object.

Velocity is defined as the rate at which an object changes its velocity; therefore if there is zero velocity then acceleration is neutral as well.

An object can only accelerate if its velocity changes.

acceleration is change in velocity.. and velocity constantly changes in circular motion, as the direction constantly changes. This constant change in velocity causes the object to accelerate.

Yes, acceleration is the how the velocity changes. This also includes when an object turns

The velocity changes when an object is acted upon by unequal forces.

That's simply called a change in velocity. On the other hand, the rate of change in velocity - how quickly velocity changes - is called acceleration.

Yes you are absolutely right.. the acceleration of an object is how quickly it's velocity changes AND the direction in which it changes.

Changes its energy of motion (kinetic energy), changes its momentum, changes its velocity.

That rate at which the velocity of an object changes is known as the acceleration of said object. It can be defined mathematically as a=v/t where a=acceleration, v=the change in velocity, and t=the time in which this change in velocity occurred.

Zero, by definition. "Terminal velocity" implies that the velocity no longer changes.

No.When an object accelerates its velocity is changing.As velocity is defined as speed with direction, its velocity changes ifeither the speed or the direction of travel changes.As its velocity is changing it is technically accelerating (or possibly 'decelerating'if you are an American)