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No it does not. If the velocity is 10 m/s for 10 secs and 0 for another 10 secs, then the average is 5 m/s which is non-zero over the 20 second period. But the instantaneous velocity is zero for the period from 10 to 20 seconds.

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โˆ™ 2015-10-18 13:01:54
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Q: If an object's average velocity is nonzero over some time interval does this mean that its instantaneous velocity is never zero during the interval?
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Related questions

Can you have a nonzero average velocity?

Yes. As long as the inital and end positions are different, you will have a nonzero average velocity.


Can there be zero displacement and nonzero average velocity?

It is not possible because the average velocity is equal to the displacement in a given time interval, ie: V = (displacement) / (time interval) As the zero displacement average speed will also be zero.


If the total displacement is zero can the average velocity be nonzero?

No, you cannot have a zero displacement and a nonzero average velocity. If the object has not moved any where how can you attain a nonzero velocity? You cannot.


Can an object have an instantaneous velocity of zero when the average velocity is nonzero?

A simple example is a ball tossed into the air. When the ball reaches its apex -- its highest point -- its instantaneous velocity is zero. If we assume that up is the positive direction, the ball's velocity is positive when it is initially tossed into the air, but it slows immediately. That is, its velocity becomes less positive until it reaches zero velocity. After that point, the velocity becomes increasingly negative (because down is the negative direction). Until the ball returns to earth and reaches the height at which it was initially thrown, its average velocity is non-zero. If the ball is allowed to hit the ground, its average velocity will be slightly negative, which is still non-zero. But it still had an instant -- at its apex -- when its velocity was zero.


Can a body have nonzero average speed but have zero average velocity give example?

An object moving in a circular path at constant speed will have a non-zero average speed and zero average velocity since velocity is a vector parameter,


Can a body have zero average velocity but a nonzero average speed give example?

Yes, you can. Example: An object going around in a circle.


Can an object have zero velocity and nonzero acceleration?

no


What object has velocity?

Any object which moves has velocity.Velocity is a vector quantity which includes direction so the object's velocity will change at every point in time if there is a nonzero acceleration.An object going around in circles uniformly will have a zero average velocity when measured as displacement over a time interval if the time interval is a multiple of the period of revolution. Speed is similar to velocity but is a scalar quantity independent of direction; you can think of it as distance covered traveling per unit of time; that is what your speedometer measures.


If the average velocity o nonzero for some time interval does this mean that the instantaneous velocity is never zero during this interval?

Not at all. Consider this example: -- I start out at 8:00 in the morning. -- I head east, drive 5 miles in 15 minutes, and park my car at 8:15. -- I go into my office, close the door, and spend the next 9-1/2 hours on Wiki.Answers. -- I leave the office exhausted at 5:45 in the evening. -- I head east again, drive another 5 miles in the next 15 minutes, and stop at a bar at 6:00. ==================================================== I left home 10 hours ago, and I am now 10 miles east of my home, enjoying a tall cold one. My average velocity for the 10 hours is 1 mile per hour east. The average is non-zero, even though I was at my desk playing computer games from 8:15 until 5:45. At any instant during 95% of the day, my instantaneous velocity was zero.


What object has?

Any object which moves has velocity.Velocity is a vector quantity which includes direction so the object's velocity will change at every point in time if there is a nonzero acceleration.An object going around in circles uniformly will have a zero average velocity when measured as displacement over a time interval if the time interval is a multiple of the period of revolution. Speed is similar to velocity but is a scalar quantity independent of direction; you can think of it as distance covered traveling per unit of time; that is what your speedometer measures.


How does vector calculus apply in fluid mechanics?

The velocity at each point in the fluid is a vector. If the fluid is compressible, the divergence of the velocity vector is nonzero in general. In a vortex the curl is nonzero.


Can a body have zero velocity with nonzero accelaration?

Yes, but only for an instant.

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