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Answer 1
It means the change in speed is a constant, over the time interval in question. Another view is to plot speed versus time, you would get a straight line with a constant slope. For the geeks, it means the function representing distance versus time is a quadradic (power of 2), so that the second derivative (acceleration) is a constant. For example if the distance versus time is
D=3T**2
then the speed at any point in time is (the 1st derivative)
S=6T
and the acceleration is the 2nd derivative
A=6
which is no longer dependent on time (ie: it is a constant).
Answer 2
Deceleration is the negative form of acceleration, meaning when something is slowing down, i.e. that the velocity keeps decreasing as time keeps increasing until velocity reaches 0.
The uniform part concerns the rate of the slowing. Deceleration can have jerk, meaning that the change in velocity between two equidistant points in time is different. Uniform deceleration lacks jerk, meaning that all changes in velocity over time are constant. In lay men's terms, for example, when you stop a car by applying the breaks, the speed of the car might decrease from 35 to 30 miles per hour in one second and then decrease from 30 to 20 miles per hour in the next second. This shows jerk because in the first instance the deceleration was half of the second deceleration. If the example were changed so that in the second second, the speed dropped from 30 to 25 miles per hour, this would be uniform.
Therefore uniform deceleration is when something slows down at a consistent rate.
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What is instantaneous velocity in math?
if under uniform acceleration or deceleration v = u + (a*t) where: v = instantaneous velocity u = initial velocity a = acceleration (negative if decelerating) t = time elapsed
What is the term which means to change speed?
Acceleration or deceleration
Is deceleration and retardation same?
"Deceleration" is a decrease in speed, however you are still going in the SAME direction so it is POSITIVE. "Retardation" is going in the OPPOSITE direction, therefore it is NEGATIVE.
What is a model in which each outcome has an equal probability of occurring?
A uniform distribution.A uniform distribution.A uniform distribution.A uniform distribution.
How do you measure or calculate deceleration during a collision?
In a controlled test condition (like crash tests on cars) an accelerometer is used to measure the rate of deceleration. It should be possible to estimate the deceleration following a collision if the speed of the vehicles at the moment of the collision is known. We could do this by measuring the amount the car was crushed/dented during the collision. We know the vehicle decelerated from its starting speed over this distance so we can estimate the average deceleration. I believe there are more sophisticated techniques used by accident investigators. As an aside, in strict physics terminology, slowing down (as well as any other change in velocity) is acceleration, not deceleration however deceleration is often used to imply a reduction in speed in every day English. If you want to get into this further have a look at "Are speed and velocity the same?" and remember that acceleration is also a vector.
What is the uniform rate of decrease of velocity of a moving body?
Uniform Constant Deceleration
What is the difference between deceleration and retardation?
retardation and deceleration in uniform linear motoin, they are same but in projectile motion they not the same
What is meant by uniform and non uniform motion?
motion that is always constant [Either acceleration or deceleration that is called uniform motion......... motion that undergoes a change in velocity,either by changing speed or changing direction,,,,,that.s changes are called non uniform motion......
What is the abbreviation for deceleration?
The abbreviation for deceleration is decel. Another common abbreviation for deceleration is dec. There is not a standard abbreviation in place for deceleration.
Meaning of uniform motion?
Motion that is always constant. ( Either acceleration or deceleration) this is called uniform mothion
What the definition of deceleration?
The definition for deceleration is: a decrease in rate of change; for example: "The deceleration of the arms race."
What came first the deceleration of independence or the constitution?
deceleration of independence
What is instantaneous velocity in math?
if under uniform acceleration or deceleration v = u + (a*t) where: v = instantaneous velocity u = initial velocity a = acceleration (negative if decelerating) t = time elapsed
Is deceleration a form acceleration?
Acceleration and deceleration are both the rate at which velocity changes, Deceleration is a negative acceleration. In an equation the rate of deceleration is shown as a negative acceleration valueCentripetal acceleration is different and represents the rate of change of tangential velocity. There is no equivalent centripetal deceleration.
What is rate of deceleration?
The rate of deceleration is how quickly something is slowing down.
Differentiate positive acceleration and negative acceleration?
A positive acceleration is a change in velocity such that the latter velocity is greater than the former velocity and is therefore going fasterwhile a negative acceleration or deceleration is a change in velocity such that the latter velocity is lesser than the former velocity and is therefore going slower.Now let us look at the equation of a uniform acceleration (the change in velocity is uniform):a = (vf-vi)/sIf the final velocity is greater, you will have a positive acceleration. If the initial velocity is greater, you will have a deceleration.
What is the definition of deceleration acceleration?
Acceleration is when speed increases. Deceleration is when speed decreases.
