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Acceleration is a change in speed or direction. Acceleration like most variables in science is a quaternion, consisting of a real part and a vector part, a=ar + av.Unfortunately, our education system has not caught up to this fact and most students don't get to study vectors and hardly any get to study quaternions. An example of the real and vector acceleration is given in Gravity.

The gravitational energy is E=-GmM/r + mcV= -mu/r + mcV, the force of gravity is

F=(mv^2/r - mcv/r cos(x)) + (dmcV/cdt + Del x mcV - Del mu/r).

The acceleration is:

a= f/m= (v^2/r -cv/r cos(x)) + (dV/dt + cv/r sin(x)T' + v^2/r R/r)

The first parenthesis gives the real part of acceleration and the second parenthesis gives the vector part of acceleration. V^2/r is the centripetal acceleration and -cv/r cos(x) is the centrifugal acceleration.

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15y ago
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15y ago

the answer is Velocity the answer is inertia

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13y ago

Acceleration is the rate at which velocity changes. (Not speed.)

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12y ago

rate of change of velocity

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12y ago

Direction.

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14y ago

velocity

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Q: An acceleration can be a change in speed or a change in?
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Related questions

How is acceleration related to the change in speed?

A change in speed (and/or direction) is acceleration.


Is acceleration the fastest kind of speed?

No. An acceleration is not a speed. It is a rate of change of speed - that is, a change of speed, divided by the time it takes to change the speed.


What is the difference between constant speed and constant acceleration?

Constant speed means that speed doesn't change. Constant acceleration means that acceleration doesn't change. (If the acceleration is anything but zero, speed WILL change.)


How do you calculate time with speed and acceleration?

Average acceleration = Change in speed/time so Time = Change in speed/Average acceleration


The relationship of speed and acceleration?

Acceleration is the time rate of change of speed. Acceleration = speed/time.


For a car moving around a circular track at a constant speed the acceleration is?

constant speed=0 acceleration Acceleration is the change in speed. If the speed doesn't change(ie constant) the acceleration is zero.


What is the different between motion and acceleration?

Motion is about speed of location change, acceleration is about speed change.


How is increasing speed acceleration?

By definition acceleration is the change in velocity (speed).


How do you find the acceleration?

Acceleration = (change in speed) divided by (time for the change)


How is speed and acceleration related?

Acceleration is the change in velocity ("speed") over time.


What is speed does not change over time called?

A change in speed is a change in velocity - so, a change in speed is an example of acceleration! Acceleration may be positive or negative. Negative acceleration is sometimes called deceleration. When a force acts on an object; it may change the object's acceleration (speed, direction, or both).


Can acceleration change with out increase or decrease speed?

yes the 3 types of acceleration are increased speed decrease speed or change in direction.