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Because it is defined that way. In common language, the words "speed" and "velocity" are used interchangeably. But in physics, if a vector quantity is desired, the word "velocity" is used; for a scalar quantity, the word "speed" is used.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoBoth velocity and acceleration of vectors because their magnitude is dependent on their direction. For example a velocity of 6 ft/s is different from a velocity of -6ft/s because they are in opposite directions. Like wise, an acceleration of 9.8 ft/s^2 indicates an increase in velocity while -9.8 ft/s^2 indicates a decrease in velocity.
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What is the formula for acceleration?
a=dv/dt. By definition, acceleration is the rate of change of velocity. In mathematical notation, it is given as the formula stated above. Two special cases: 1. When acceleration is constant: The rate of change is a constant. Therefore, it can be calculated by: a=(vf - vi) / t where a is acceleration vf is final velocity vi is initial velocity and t is time taken 2. When velocity is constant: Velocity is not changing. The rate of change of velocity is zero. Acceleration has to be zero. * * * * * Note that velocity and acceleration are both VECTORS. Therefore, an object going round in a circle, at CONSTANT speed, has velocity and acceleration that are changing all the time - because the direction of motion is changing.
What is the resultant acceleration?
Acceleration is a vector, meaning each acceleration has both magnitude and direction. The resultant of vectors is basically the net acceleration on the object expressed as a single vector. For example, if there are two vectors each with a magnitude of 2 meters/(seconds squared) acting on an object and these vectors were placed on the x and y axes then you could represent this system of 2 vectors 90 degrees apart each with a magnitude of two meters/(seconds squared) as one vector of 45 degrees with a magnitude of 2 times the square root of 2 meters/(seconds squared).
What is the value of acceleration for a body?
Acceleration means how fast the body's velocity changes - in symbols, dv/dt. Average acceleration during a certain time is equal to (change in velocity) / (time elapsed). Since you are dividing a velocity by a time, the standard unit for acceleration is (meters / second) / second, but this is normally written as meters / second squared.
State in words how acceleration is calculated?
There are two methods, it depends on what variables you have: 1. Subtract the initial velocity from the final velocity and divide that whole term by the time (Vf- Vi)/t = a 2. Square both the initial velocity and the final velocity and subtract the squared inital velocity from the squared final velocity and that answer by two times the distance (Vf^2 - Vi^2)/2d = a
When speed changes does its velocity change?
When the object is acted upon by an outside force.
Is velocity the same as acceleration?
Both are vectors. But acceleration and velocity have different dimensions. Acceleration is defined as the rate of change of velocity.
Why are velocity and acceleration both vectors?
They aren't, but they can be described as vectors. The most common way is to describe them as vectors of three components in Euclidian space.
Velocity and acceleration are vectors because?
Both velocity and acceleration of vectors because their magnitude is dependent on their direction. For example a velocity of 6 ft/s is different from a velocity of -6ft/s because they are in opposite directions. Like wise, an acceleration of 9.8 ft/s^2 indicates an increase in velocity while -9.8 ft/s^2 indicates a decrease in velocity.
How is acceleration similar to speed and velocity?
-- The magnitude of acceleration is equal to the time rate of change of speed. -- The magnitude of acceleration is equal to the time rate of change of the magnitude of velocity. -- Acceleration and velocity are both vectors.
What are vectors good at representing?
Vectors can represent anything that has both magnitude and direction, like velocity, acceleration, momentum, force, etc.
What are the significant similarities and differences between velocity and acceleration?
The differences are that acceleration refers to the rate of change in velocity of an object while velocity is the rate of displacement of an object, and acceleration is measured in meters per squared seconds while velocity is measured in meters per second. On the other hand, they both use time as a component and they are both vectors in nature.
Are velocity and acceleration the same?
They are definitely NOT the same. Acceleration is not velocity; acceleration is the RATE OF CHANGE of velocity. In symbols: a = dv/dt, which basically means that you divide the difference of velocity by the time, for a small time interval. Acceleration and velocity are both vectors.
What is the formula for acceleration?
a=dv/dt. By definition, acceleration is the rate of change of velocity. In mathematical notation, it is given as the formula stated above. Two special cases: 1. When acceleration is constant: The rate of change is a constant. Therefore, it can be calculated by: a=(vf - vi) / t where a is acceleration vf is final velocity vi is initial velocity and t is time taken 2. When velocity is constant: Velocity is not changing. The rate of change of velocity is zero. Acceleration has to be zero. * * * * * Note that velocity and acceleration are both VECTORS. Therefore, an object going round in a circle, at CONSTANT speed, has velocity and acceleration that are changing all the time - because the direction of motion is changing.
Is Centripetal acceleration a vector?
Um, well... it can be represented by a vector.Just like anything else that has both a direction and a value.The mere numerical value of an acceleration is not a vector,since it's just a value without a direction.
Are Time and velocity are both vectors?
yes they are both vectors because i am married but cheating (hoe) The Answer for Apex is false
What are the vectors?
Vectors are quantities that have both value and direction. Such as displacement and Velocity.
Time and velocity are both vectors.?
false
