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Probably determined by the method used for enforcement. It refers to the speed you are going when the radar gun pings you (instantaneous speed) or the time it takes to cover a predetermined distance from an aircraft (average speed).
The above refers to enforcement, as indicated. And it is correct. As regards enforcement. The to the question is that the speed limit sign refers to the maximum instantaneous speed at any point in your travels on a roadway that is so marked.
What else can I help you with?
Does light speed accelerate or is it instantaneous velocity?
Instantaneous.
How is speed calculate?
Average speed is calculated by dividing the total distance covered divided by the time taken. Instantaneous speed is calculated as the derivative of displacement with respect to time.
What does the slope of the instantaneous speed-vs-time graph represented?
The slope of the instantaneous speed-vs-time graph represents the acceleration of the object. A positive slope indicates the object is accelerating in the positive direction, while a negative slope indicates acceleration in the negative direction. The steeper the slope, the greater the magnitude of the acceleration.
Is the average speed equal to the magnitude of the average velocity justify your answer?
Yes usually and no rarely, velocity is defined as a vector, having both a direction and a magnitude (which is speed in the case of velocity). For instance 100 mph (speed) east (0o) (direction). In this form it is easy to see that the magnitude is 100 mph but mathematically to determine the magnitude of a vector you would divide the vector by its direction. 100 mph 0o / 0o = 100 mph Average speed and average velocity share the same relationship as instantaneous speed and instantaneous velocity so divide out the average direction from your average velocity to determine your average speed. If this is over a time period and you know the beginning and ending places in space your averages will simply be the difference from the starting to the ending places. So yes so long as you define speed to actually be the magnitude of the vector. However, if speed is taken without direction over time it may become something different. If an object travels along a vector with a negative magnitude its speed will not be negative but its vector magnitude will. Ex: A car travelling in reverse still has a positive speed but a compass will show it to be heading in the opposite direction of travel, a negative vector value...
What is speed limit on snow covered roads?
The speed limit doesn't change, but you are expected to make a reasonable adjustment to your speed to compensate for the conditions. So basically, as fast as you can go at or below the speed limit without getting into a wreck.
How is instantaneous speed different from average?
The average speed is the speed that it takes to travel a certain distance in a certain time. Average speed is determined by dividing the distance traveled by the time taken to get there. Instantaneous speed is a certain speed at any given time.
Does the speedometer of a car read average speed or instantaneous speed?
instantaneous speed
What is the difference between instantaneous speed and average speed?
Instantaneous speed is the speed at a particular moment in time.The average speed of an object tells you the (average) rate at which it covers distance
Does the speedometer on a vehicle show the average speed or instantaneous speed?
The speedometer on a vehicle shows the instantaneous speed, which is the speed of the vehicle at any given moment. It does not display the average speed over a period of time.
How are average speed and instantaneous speed alike?
Average speed and instantaneous speed are both measurements of the speed of an object. The instantaneous speed measures how fast the object is going at a particular moment, while average speed shows how fast the object was moving in total over time.
Is a car's speedometer show instantaneous speed average speed or velocity?
A car's speedometer typically shows the instantaneous speed, which represents the current speed of the vehicle at any given moment. It does not show average speed or velocity.
What is the same instantanoeus speed and average speed?
Instantaneous speed is the speed of an object at a specific moment in time, while average speed is the total distance traveled divided by the total time taken. At the exact moment when an object's speed is constant, its instantaneous speed and average speed will be the same.
What do you mean by instantaneous speed?
Instantaneous speed is the speed of a body at any one instant. There is really no such thing as the instantaneous speed, it is merely the average speed over a very short space of time.
Can instantaneous speed and average speed ever be different for a moving object?
Of course. When you're driving on the Interstate and you see a State Police cruiser coming up behind you, you stomp the brake and slow way down to the speed limit. Now your instantaneous speed is only the speed limit. You feel like you're crawling, you can't stand it, and as soon as you're sure he can't see you and doesn't care, you let your car come back up to normal speed again. Your average speed for the trip, or for any whole hour that includes that little episode, is comfortably in excess of the limit, although your instantaneous speed at any instant during those few minutes was exactly the posted limit.
Why do you use average speed?
The concept of average speed is somewhat simpler than "instantaneous speed".
To justify with calculation average speed is equal to instantaneous speed?
Average speed is calculated by dividing the total distance traveled by the total time taken. Instantaneous speed, on the other hand, is the speed at a specific moment in time. They can be equal in situations where speed is constant over time, but in most cases, they will differ because instantaneous speed can vary as the object moves.
What are the similarities between average speed and instantaneous speed?
Both average speed and instantaneous speed are measures of how fast an object is moving. Average speed is calculated over a specific time interval, while instantaneous speed is the speed of an object at a particular moment in time. Both can be used to describe how quickly an object is changing position.
