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If an object has zero acceleration what two things could be true about its velocity?
Wiki User
∙ 15y ago
The velocity does not change direction or magnitude. The object 1) may not be moving, or it 2) may be moving at a constant velocity. In the case of the latter, that means it's moving in the same direction and at a constant speed.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoit's velocity is constant and actual acceleration is equal to the friction. OR
it's velocity is zero.
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How an object could still be moving with the 0 acceleration?
Zero acceleration means that the velocity doesn't change. It doesn't mean that there is no velocity.
How could you describe a situation where an object velocity does not change?
if velocity is constant, that means then the net acceleration acting on the object is equal to zero
Do you agree with the statement an object with a zero velocity can have an acceleration greater than zero do you agree?
Yes. If it weren't so, an object that isn't moving could never be made to move at all! Of course, once you apply acceleration (which implies a change of velocity), the object's velocity won't stay zero. But for a brief instant, the velocity can be zero while accelerating.
Why is the acceleration of an object moving at a constant velocity always 0?
Acceleration is the change in velocity of an object. If an object is travelling at an unchanging speed, its speed is neither increasing (which would make a positive acceleration) nor decreasing (which would make a negative acceleration). Thus, the acceleration is 0.
Does an object that is moving in a linear path with an acceleration in the direction opposite to the motion have a decreasing velocity?
No. Acceleration is Delta-Velocity / Delta-Time. If Acceleration is negative then that means that either Delta Velocity is negative or Delta Time is negative---which is not practical. For Acceleartion to be negative, that means the Velocity has to Decrease. (where Delta Velocity is change in Velocity or V2 - V1)
How an object could still be moving with the 0 acceleration?
Zero acceleration means that the velocity doesn't change. It doesn't mean that there is no velocity.
How could you describe a situation where an object velocity does not change?
if velocity is constant, that means then the net acceleration acting on the object is equal to zero
Do you agree with the statement an object with a zero velocity can have an acceleration greater than zero do you agree?
Yes. If it weren't so, an object that isn't moving could never be made to move at all! Of course, once you apply acceleration (which implies a change of velocity), the object's velocity won't stay zero. But for a brief instant, the velocity can be zero while accelerating.
The net force of an object is zero can you conclude that the object is at rest?
You can't. The net force simply means that the acceleration is zero. It could be at rest, or the object could be moving at a constant velocity.
Acceleration can be defined as the rate at wich velocity?
Acceleration is observed when velocity changes with respect to time. For instance, at t0 an object may be moving with a velocity of 2. At t1, it could be moving with velocity of 4, which means that it has doubled its velocity; thus accelerating. This can also be observed in reverse, where at t0 the velocity is 4 and at t1 the velocity is 2. The object then has decelerated, or has slowed down with respect to change in time.
Is Acceleration is a rate that can describe how speed or direction is changing?
Acceleration is a change in velocity. Velocity is defined as the speed of an object in a specific direction. It is a vector quantity. Thus acceleration could be a rate of change of speed, velocity or both. In addition, acceration can be negative. In physics terms, there is no such thing as "Deceleration". Any change is considered to be acceleration.
Can an object accelerate and have zero velocity?
I'm not a scientist, but the following seems reasonable to me. If your frame of reference is the earth's surface, then it seems clear that an object can have zero velocity and zero acceleration. You could even have non-zero velocity and zero acceleration. What seems impossible is to have zero velocity and non-zero acceleration. When you think of accelaration think of changing velocity. A car moving straight down the highway at a constant speed of 55 mph is neither speeding up nor slowing down. Though it has velocity, there is no change in its velocity so acceleration will be zero. For a car parked on the side of the road, on the other hand, its velocity will be zero but what about its acceleration? Is velocity changing? No, so it will have zero velocity and zero acceleration.Yes.
What is the acceleration of a rain drop that falls at a constant velocity?
This is not a simple question and not enough information is provided to answer it. Among other things it depends upon the time it takes to reach terminal velocity and the terminal velocity depends on the various drag forces operating which in turn will depend on other variables such as initial height, wind speed, temperature, humidity, etc. You could calculate the velocity of any object falling in a vacuum if the acceleration due to gravitational force remains constant throughout the fall. v=v0+at where vo=initial velocity (probably zero if the object is initially at rest), a is the acceleration due to gravity (9.8m/s2) at or near the surface of the earth, and t is the time of fall.
Why is the acceleration of an object moving at a constant velocity always 0?
Acceleration is the change in velocity of an object. If an object is travelling at an unchanging speed, its speed is neither increasing (which would make a positive acceleration) nor decreasing (which would make a negative acceleration). Thus, the acceleration is 0.
If an object is speeding up to the right what direction does its velocity vector point?
From the information given, we don't really know. We know that the acceleration vector points to the right, but the velocity could be anywhere.
Does an object that is moving in a linear path with an acceleration in the direction opposite to the motion have a decreasing velocity?
No. Acceleration is Delta-Velocity / Delta-Time. If Acceleration is negative then that means that either Delta Velocity is negative or Delta Time is negative---which is not practical. For Acceleartion to be negative, that means the Velocity has to Decrease. (where Delta Velocity is change in Velocity or V2 - V1)
Acceleration is a change in speed or?
Acceleration is the change in an ogjects speed or a change in an objects direction of motion or both of these. If instead of speed you use the word velocity , which is both an object's speed and its direction of motion, then you could say "acceleration is the change in an objects velocity" and that would cover all the possibilities in one statement.
