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Answered 2011-09-05 15:56:43

Yes. An object moving at constant velocity would have zero acceleration.

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Acceleration is the rate of change of velocity, a=dv/dt Therefor if a= 0 the velocity is constant or constantly the same. It can have any value however while it remains the same.

Yes. This happens, for example, when you throw an upject directly up, and it reaches its highest point. In that case, its velocity is zero, and its acceleration is -9.8. (If it didn't have acceleration, it would stay up there.)

Any falling object has acceleration and velocity vectors in the same direction.

Yes, an object can have a velocity of zero and an acceleration of zero. It's an object with a velocity of zero and no net applied force.

As long as acceleration is zero, the object's velocity is constant.

Yes. For example, if you throw an object up into the air, this will happen when it reaches the highest point. At that moment, its velocity is zero; on the other hand, at any moment, the object is accelerating downward at 9.8 meters per square second.

The acceleration is the same direction of the velocity

It will increase the velocity of the the object in which the acceleration is applied.

No, the definition of acceleration is the increase change in velocity over time. An acceleration can also be a decrease in velocity over time. Constant velocity refers to an object that maintains the same velocity as time progresses. If the object has an acceleration, its velocity will not remain constant. In the case of rotational velocity there is a constant internal acceleration that has the magnitude v2/r

No. Velocity is the change of location and accelarion is any change that occurs to the velocity of an object.

When there is no resultant force there is no acceleration therefore the velocity will stay the same.

They all have to do with how fast an object is moving

With no acceleration the final velocity is the same as the initial velocity. If the initial velocity is zero, the object is not moving. Unless there is some kind of force influencing the object. Then you have to calculate the acceleration: a=F/m where "F" is the force influencing the object (in Newtons) and "m" is its mass (in kilograms).

Observe that the object below moves in the negativedirection with a changing velocity. An object which moves in the negative direction has a negative velocity. If the object is speeding up then its acceleration vector is directed in the same direction as its motion (in this case, a negative acceleration).

Yes. For example a swinging pendulum has zero velocity at the turning point but acceleration is not zero.

Acceleration is the rate of change of VELOCITY, not of SPEED. If the velocity changes, there is acceleration. It is enough for the direction to change.

an acceleration of Zero, and a constant Inertia.

It depends on the frame of reference (where it is).On Earth a body on a table is still rotating around the centre of the Earth. This implies a change of direction and thus having a velocity around the centre and an acceleration acceleration due to centripetal force that makes a body follow a curved path. Eben without this the body is orbiting the sun with the same impact

You are confusing terms.Acceleration is the rate at which an object changes speed.Velocity is a combination of speed and direction