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Instantaneous speed at an instant is equal to magnitude of instantaneous velocity at that instant?
Wiki User
Answered 2009-03-16 17:39:48
That's correct, the instantaneous magnitudes are equal. Non-instantaneous values may not be equal. For example, to find average speed, between two points, you divide the actual path distance by the time, but for average velocity you divide the straight line distance, between the points, by the time. The straight line distance could be quite a bit shorter then the actual path distance (for curved motion) so you could get a big difference between those averages. When calculating "instantaneous" values, however, the difference between "actual path distance" and "straight line distance" becomes insignificant, because you are using distances for infintesimally small time intervals.
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Related Questions
Is how fast velocity is changing at a specific instant?
That's the magnitude of instantaneous acceleration.
What is the instantaneous acceleration?
The instantaneous acceleration is how fast velocity is changing at a specific instant.
What is instantaneous speed or velocity?
It is the speed or velocity at a particular instant.
What's the difference between instantaneous velocity and instantaneous acceleration?
Instantaneous velocity is the rate at which an object is moving in a uniform direction, distance per unit time, at any given instant in time. instantaneous acceleration is the rate at which an object's velocity is changing at any given instant in time
Are instantaneous velocity and velocity the same thing?
No.Average velocity is the average of the velocty of entire motion where as instantaneous velocity is the velocity at an instant, it may be a function of time or displacement.
How is instantaneous velocity different from average velocity?
Average velocity is the average of the velocty of entire motion where as instantaneous velocity is the velocity at an instant, it may be a function of time or displacement.
Instantaneous speed at an instant is equal to magnitude of instantaneous velocity at that instant Why is it so?
Instantaneous velocity mean change of displacement in extremely small amount time. (in math way, taking[ lim t--->0 (change in displacements/change in time) ]. instantaneous speed is the same expect displacement change to distance. So,because of very very small change in time, magnitude of distance and displacement will be same for any direction the object is moving.
When is the instantaneous velocity equal to avg velocity?
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.
When an object moves with constant velocity does its average velocity during a time interval differ from its instantaneous velocity at any instant?
No. If it its moving at constant velocity, its instantaneous velocity would be the same as its constant velocity.
The rate at which velocity is changing at a given instant is described by?
The answer is: Instantaneous Acceleration.
Difference between instantaneous and average velocity?
Average velocity is simply displacement over time. Instantaneous velocity is the velocity at any given instant, or the displacement over an infinitely small amount of time.
Define speed at which an object is moving at a given instant time?
This would be Instantaneous velocity
What is the correct definition of instantaneous velocity?
The velocity of an object at a particular instant or at a particular point of its path is called instantaneous velocity. In another word, the instantaneous velocity of an object is defined as the limiting value of the average velocity of the object in a small time interval around that instant , when the time interval approaches zero. v = dx/dt , where dx/dt is the differential coefficient of displacement "x" w.r.t. time "t"
What is the difference between Instantaneous speed and instantaneous velocity?
Speed has only size. Velocity has size and direction.If three drivers are driving their cars at 50 mph headed north, 50 mph headed south, and50 mph headed east, their speeds are all equal, but their velocites are all different.Instantaneous speed is the speed at an instant in time. A point on the edge of an LP record hasthe same instantaneous speed whenever you look at it.Instantaneous velocity is the velocity ... speed and direction ... at an instant in time. A point on theedge of an LP record has a different instantaneous velocity every time you look at it. Even thoughthe speed is always the same, the direction keeps changing.
Can the instantaneous velocity of an object at an instant of time ever be less in magnitude than the average velocity over a time interval containing that instant?
Yes, if the instant in question is near the end of the objects travel, but no if it is at the very begining, unless the object's velocity is somehow increasing while it is in movement.
How do you find instantaneous velocity from position time graph?
The gradient of the tangent to the graph at the instant in question.
What is the speed at which an object is moving at a given instant in time?
Instantaneous velocity (both speed and direction).
Is Average velocity the slope of the line tangent to the curve on a velocity time graph at a specific instant of time?
No, it is instantaneous acceleration.
What does a distance time graph allow you to find?
Besides obviously distance at any instant, on a connected, continuous distance-time graph, you can obtain instantaneous velocity and instantaneous acceleration.
Speed of an object at one instant of time is the objects what?
Speed of an object at one instant of time is the object's instantaneous speed.(Not velocity.)
What instrument measures instantaneous speed?
Your speedometer! It tells you how fast you are going at that instant.All different types of devices are used to measure instantaneous velocity including chronographs, lasers, and radars.
How does average velocity differ from instsntaneous velocity?
Average velocity is the average of the velocty of entire motion where as instantaneous velocity is the velocity at an instant, it may be a function of time or displacement.
What is a sentence for instantaneous speed?
Instantaneous speed is, essentially, instant speed. An example sentence would be: The Camaro's instantaneous speed surprised most of the watchers.
what does instantaneous?
Happening In an instant. Ex: the sound of thunder after a lightening strike is not always instantaneous depending on how far away it is.
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