Physics

# Compare and contrast velocity and instantaneous speed?

001 ###### 2014-04-11 03:15:53

velocity is just a general term for speed (it could be average velocity or instantaneous velocity). Instantaneous velocity/speed (same thing) is the speed at that second. If you are familiar with calculus, it is the derivative of the position graph.

Whereas average velocity is how fast the object is going in, for example, 1 hour, it is the speed that is maintained the whole hour (or the average)

Instantaneous would be that at the second, at for example t=1.425, the speed is 24m/h . something along those lines

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## Related Questions Instantaneous speed is the magnitude of the velocity. Velocity also states the [direction] of the speed. It is the speed or velocity at a particular instant. Speed is a scalar quantity that refers to how fast an object is moving. Speed can be thought of as the rate at which an object covers a distance. While velocity is a vector quantity that refers to the rate at which an object changes its position. But when we calculate speed and velocity what we get is average not instantaneous. Average Speed= Distance travelled ------------------------ Time period Average Velocity= Displacement ------------------------ Time period No. Speed can remain constant when velocity changes, but velocity can't remain constant when speed changes.  the instantaneous velocity or speed is the speed a body travels at a particular and average velocity is the total distance an object Yes. Velocity is speed and direction so it can change velocity by changing direction. Speed, instantaneous or not, is a term used for how fast an object travels. Velocity, instantaneous or not, is a term used for how fast an object travels in a particular direction. They are the same thing, however velocity is 'in a given direction', speed is in any direction. -- "Speed" is the rate at which distance changes. -- "Velocity" is speed along with the direction of motion. -- "Acceleration" is the rate at which velocity changes, including the direction of the change. Both are velocity functions. Instantaneous velocity is the derivative of the average velocity * * * * * They are both speed functions. Velocity is a vector related to speed but quite irrelevant in this context. An object rotating at a constant [angular] speed has a velocity that is continuously changing but that has no relevance. "Velocity" is a vector quantity. This also applies to instantaneous velocity. If you want the scalar quantity, you talk about "speed". That is the case when you are talking about instantaneous speed and velocity - or when the velocity is constant. In the case of an average speed and velocity, this relation does not hold.  For the instantaneous value of average velocity, average speed and average velocity are equal.  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. When the length of the time is decreased more and more ,average velocity of the particles equals instantaneous velocity. Because speed is the magnitude of the velocity vector. The velocity consists of the speed and the direction, and the whole thing can be embodied in a 3D vector. If you like the velocity is the magnitude (the speed), which is a scalar (just a real number), multiplied by a unit vector in the right direction. Velocity is a vectorial quantity, speed with a direction. Generally it is a Yes. Instantaneous velocity is the exact velocity at a particular time in the course of the movement. However, average velocity is the average of all the instantaneous velocity over a period of time. It is also known as speed in everyday life. As a result, the movement of an object over a time period under varying velocity denotes a varying instantaneous velocity which could be different from the average velocity. It is however, possible that the instantaneous velocity equates to the average velocity at a certain point over the duration of movement. For example, a ball is traveling at instantaneous velocity of 99m/s at t=1s , 100m/s at t=2s and 101m/s at t=3s. the average velocity over the 3s period is hence 100m/s which coincides with the instantaneous speed at t=2s.  Speed means how fast something moves.If you talk about "velocity", that means you also care about the direction. In other words, a vector quantity. Acceleration is the rate of change of velocity - in symbols: a = dv/dt No, velocity is the instantaneous speed of an object, the rate of change would be the acceleration of the object. BecuZ average is the same limit and the other is nesting velocity

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