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Physics

Top Answer

Yes. Velocity is speed and direction so it can change velocity by changing direction.

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0No. Speed can remain constant when velocity changes, but velocity can't remain constant when speed changes.

It does not make sense to say that the instantaneous velocity is constant. Instantaneous velocity by definition means that it is the velocity at a moment of time. If this is a question on some homework, just say no. The acceleration, or rate of change of the velocity, is not necessarily constant.

Yes. The velocity can change if the speed remains constant and the direction changes.

Velocity can change even if speed is constant.

No, constant velocity implies constant speed. But velocity can change even when speed remains constant, since speed is a scalar quantity but velocity is a vector quantity.

Velocity is dependent on speed AND direction, therefore velocity will change if the direction is changed.

Velocity is an instantaneous measure. Mathematically, it is the limiting value of the change in the position vector divided by the change in time as the latter tends to zero. Over larger time periods, the average velocity is the total change in the position vector divided by the total change in time. If velocity is constant, the average velocity will be the same as the instantaneous velocity.

Yes. Acceleration is a change in velocity. With no acceleration, velocity remains constant, possibly at zero.

Dividing change of velocity by the time it takes to change the velocity. If acceleration is not constant, this will give you the average acceleration during the period; to get the instantaneous acceleration, you have to take the derivative of the velocity.

Reading the question carefully, I can state categorically, withoutthe slightest fear of contradiction, that YES, the object's velocityremains constant when its velocity does not change.

No. The definition of acceleration is the change in an object's velocity over time. Acceleration must then be zero since velocity remains constant.

In a uniform circular motion,the magnitude of velocity remains constant,that is speed is constant,however due to change in direction in circular path constantly the motion is accelerated due to change in velocity.

Instantaneous velocity is a vector quantity representing the velocity Vi at any point.It is the time rate of change in displacement.

instantaneous acceleration is the instantaneous change of velocity with respect to time.

Mainly, when the velocity doesn't change. Also, in the case of varying velocity, the instantaneous velocity might, for a brief instant, be equal to the average velocity.

The tangent at a point on the position-time graph represents the instantaneous velocity. 1. The tangent is the instantaneous slope. 2. Rather than "average" velocity, the slope gives you "instantaneous" velocity. The average of the instantaneous gives you average velocity.

The answer for the blank is "constant".

The value of an impulse is the change in momentum. If the mass remains constant it is the mass times the change in velocity.

Velocity is a vector; velocity tells you how fast something is traveling (speed),and its direction. A change in velocity could indicate a change in direction orspeed, or both.

The definition of acceleration is: Any change of velocity, that is, speed or direction of motion. If an object is undergoing constant acceleration, then the definition says that its velocity must be changing.

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

The velocity can still change, even if the speed doesn't. This is because velocity is a vector - not only the magnitude is important, but also the direction.

Yes this is possible, when the velocity is constant. When velocity is constant there is no change in velocity, if there is no change in velocity then is no acceraltion. e.g. : a car traveling at a constant speed of 40m/s

A changing velocity can maintain constant speed if the motion is circular. The constant change in direction is a change in velocity, even if the speed is constant.

The rate of change in position at a given point in time is instantaneous speed, instantaneous velocity.

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