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Answered 2013-01-08 11:43:26

Acceleration is the change of velocity per unit time. Once the object has a constant velocity, its acceleration will be zero.

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What happens to the speed of a moving object when it is doubled?

When the speed of a moving object is doubled, it takes on a numerical value that is approximately equal to 2.000 times its original value. This relationship holds in both the English and the SI system of units.


Mass of an object is doubled at what speed?

Mass will be doubled if the speed is 31/2/2 times the speed of light.


What is the difference between an object with constant acceleration and an object with constant speed?

Constant speed means that the speed doesn't change.Constant acceleration means that the acceleration doesn't change. The velocity WILL change in this case - unless the acceleration happens to be zero. So will the speed - note that in circular motion, both the acceleration and the velocity change all the time, even if the speed doesn't change.


Why force changes the speed of an object?

Force = Mass * Acceleration or Acceleration = Force / MassThe Mass is the mass of the object and the Acceleration is the change of speed of the object due to the Force.


How are velocity and acceleration different?

acceleration is the increase of speed in a moving object. velocity is the speed and direction of a moving object.


What happens to the speed of an object that is accelerating?

The speed may, or may not, change. Acceleration means that the velocity changes; this means that either the speed changes, or the direction.


What happens to the speed of a moving object when it accelerates?

An object is accelerating if any of these things are happening . . .-- its speed is increasing-- its speed is decreasing-- its direction is changing.The object may be accelerating even if its speed isn't changing.Acceleration does not mean "speeding up".



Can a object with no acceleration be stationary?

If acceleration means to increase in speed or pace, then a stationary object is static, without movement, without acceleration. But, if an object is moving at a constant rate, then I suggest acceleration is not present, unless, or until the objects speed increases. Yes, an object with no acceleration may be stationary.


The term used to measure a change in speed of an object is?

Acceleration is the rate of change of the velocity (speed) of an object. Acceleration is the derivative of the speed vs. time function.


When the mass of a moving object is doubled and its speed remains the same its momentum?

If the mass is doubled,speed should be halved to conserve momentum.


When does an object have a positive acceleration?

Positive acceleration is an increased speed, i.e. acceleration acts in the same direction that the object is moving.


Can an object have increasing speed while its acceleration is decreasing?

No. If the acceleration is decreasing, its speed will also decrease.


Why does the acceleration of an object affect the speed?

Acceleration is simply a measurement of how the speed is changing, over time.


How can an object moving at a constant speed have a nonzero acceleration?

Because an acceleration is a CHANGE in speed or direction.


What is Velocity and Acceleration?

Velocity is the speed of an object in any given direction (constant); acceleration measures the change in speed of an object over time.


Is it true or false that acceleration can only occur when the speed of an object changes?

No. Acceleration is change of velocity. It occurs when an object changes speed and/or direction.


The speed at which an object falls and the acceleration at which it falls are always the same value?

False If the acceleration is constant the speed increases. If the speed is constant the acceleration is zero.


Can an object have a speed of 0 while it has an acceleration that is not 0?

Yes. Acceleration is independent of speed. A perfect example of an object with zero speed but nonzero acceleration is an object at the apex of being thrown upward. The entire time it is in the air it is accelerating downward. At its maximum height its speed is zero.


Why at a constant speed if an object changes its direction it is considered to be acceleration?

Acceleration is a direction plus a speed. If either changes then the acceleration changes.


Why is the acceleration of an object moving at a constant velocity always 0?

Acceleration is the change in velocity of an object. If an object is travelling at an unchanging speed, its speed is neither increasing (which would make a positive acceleration) nor decreasing (which would make a negative acceleration). Thus, the acceleration is 0.



Velocity is the change of speed and or direction of an object?

FALSE. Acceleration is the change of speed and/or direction of an object.


How are constant speed and constant acceleration different?

There is a huge difference between constant speed and constant acceleration. Constant speed is when the object is travelling constant, no change in its velocity and acceleration or in other words no extra force to speed up. Constant acceleration when the object is acceleration constant, it means that the speed of the object is change at the same rate each second. The acceleration rate at which the object is travelling is constant. for example, when a car is stationary at a traffic light and it starts acceleration, picking up speed but the rate of acceleration will not constant because the amount of force applied differs each second due to the acceleration rate.


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