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Speed is distance divided by time. It requires a 'background' reference frame to specify distance.
It's direction and speed may be represented by a 'vector', which is a line in the direction of travel ,of a defined length proportional to speed. But be careful with vectors, like points and lines they are 'mathematical and geometrical abstractions' an have no analogue in nature (reality).
It is poorly understood, but 'propagation speed' is always with respect only to the LOCAL background. i.e. A Light signal in a train moves at c wrt the train (d/t) not the tracks (on Venus or Earth). This was complicated by Special Relativity which was valid only for a 'perfect vacuum'. No perfect vacuum can actually exist. However an upgraded interpretation is not yet admitted into mainstream physics.
Wiki User
∙ 11y ago
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∙ 12y agoThis is often referred to as an object's velocity. The Si unit for velocity is meters per second. The measurement of velocity differs from speed in that an object's velocity can be either positive or negative depending on the direction of the object in question. Whereas speed is only a quantitative measurement.
For example:
consider a car going east at 50 meters per second then after a while it turned around and came back at 50 meters per second. In which direction did the car have a positive velocity.
Positive velocity is typically defined as movement in the initial direction. The car had movement on the first leg of its journey. When the car came back it had a negative velocity.
Wiki User
∙ 12y agoWhen an object is moving in a certain direction, it has a magnitude (speed in this case) and its direction. Since we know that D=rt (Distance equals rate times time) we can modify it to find the speed. Now we have r=D/t (rate equals distance over time). This formula will allow you to find the speed of the object in that direction.
Wiki User
∙ 12y agoThe velocity. This is true because velocity is a vector value meaning it has magnitude and direction. If is had just a magnitude, then it would be a scalar value.
Wiki User
∙ 10y agoThat's 'velocity'.
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∙ 14y agoVelocity
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∙ 12y agovelocity
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∙ 12y agovelocity
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∙ 14y agoVelocity
Phyo thirisan2010
velocity
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What is veocity?
The speed of an object in a particular direction.
The speed of an object in a particular direction?
velocity
Both speed and acceleration include the direction of an objects motion true or false?
This is not true. Acceleration includes direction, but speed does not. Speed in a particular direction is called velocity.
What is the speed of an object in an particular direction?
This is called velocity... Hope that helped :D
How fast you are changing your speed or direction of travel is a property of motion known as?
Acceleration is any change in velocity. Velocity is the measurement of both speed and direction.
What is the speed in a particular direction?
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Speed of an object in a paticular direction?
Speed =distance/time Speed in a particular direction become velocity, a vector, which has magnitude and direction.
What is the speed of an object moving on a particular direction?
The speed of an object moving in a particular direction is called the velocity and it's a vector, that is, it has magnitude and direction. Speed is the scalar part of velocity.
What is veocity?
The speed of an object in a particular direction.
The speed of an object in a particular direction?
velocity
Both speed and acceleration include the direction of an objects motion true or false?
This is not true. Acceleration includes direction, but speed does not. Speed in a particular direction is called velocity.
What term is defined as the speed of an object in a particular direction?
That is velocity.
What does not cause an object at rest to start moving?
the speed of an object in a particular direction
What is the speed of an object in an particular direction?
This is called velocity... Hope that helped :D
How fast you are changing your speed or direction of travel is a property of motion known as?
Acceleration is any change in velocity. Velocity is the measurement of both speed and direction.
Are acceleration and speed always in the same direction?
No. Acceleration only affects velocity in one particular direction (same direction as acceleration). Speed is the summation of velocities in all directions.
How is the speed of a body related to its velocity?
The speed is the MAGNITUDE of the velocity, i.e., without regard to the direction.
