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No. As used in physics, the word "acceleration" means that THE VELOCITY CHANGES. More precisely, it refers to how quickly the velocity changes, in symbols, dv/dt.

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โˆ™ 2016-01-28 11:36:02
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Q: Does acceleration always mean that an object is speeding up?
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Does a negative acceleration always mean that an object is slowing down?

No. A negative acceleration could mean a change in direction

On a speed time graph a line with a negative slope indicates that the object is?

This would indicate negative acceleration, which would mean that the object in question is speeding up.

Can an object accelerate and have a constant speed at the same time?

Definitely. Acceleration means a change of speed or direction.It does not mean "speeding up".

Why does an object traveling in a circular path at a constant speed accelerate?

Acceleration does not mean "speeding up". It means any change in speed ordirection. An object traveling in a circular path is constantly changing direction,so there is acceleration there.

How can an object be accelerating if it's slowing down?

Acceleration doesn't mean "speeding up". It only means that the speed or direction of motion, or both, are changing. Speeding up is positive acceleration in the direction you're moving. Slowing down is negative acceleration in the direction you're moving, or positive acceleration in the opposite direction.

How is a curved path an example of acceleration?

"Acceleration" does not mean "speeding up". Acceleration means any changein the speed or direction of motion. An object with no acceleration moves at aconstant speed in a straight line. If its path is not straight, then the directionof its motion changes, which fits the definition of acceleration.

If the acceleration of an object is zero does that mean that it is not moving?

NO, acceleration refers to change in speed, either speeding up(positive acceleration) or slowing down (negative acceleration.)Zero acceleration merely means it is holding a constant speed, whatever that may be (including, but not limited to a constant speed of zero.)

What does it mean if an object is in motion?


Can an object have zero acceleration and eventually-reverses its acceleration?

I am not sure what you mean by reversing a zero acceleration. An object's acceleration can, of course, change over time.

Why does terminal velocity exist?

When an object is falling, it accelerates, so it is speeding up. The faster it goes, the more air resistance there is on the object. Eventually, the force of the air resistance pushing up on the object will equal the force of gravity pushing down on the object. The forces on the object are balanced (they cancel out), so it will have no acceleration. This causes terminal velocity; the object is not speeding up anymore. When the forces on an object are balanced, it has no acceleration. This does not mean it has no velocity, it just means that the velocity is not changing (it does not speed up or slow down.)

What does a horizontal line on a acceleration graph mean?

This means that it has a constant acceleration. It DOES NOT mean that the object is at rest.

Does acceleration always mean that things speed up?

No, acceleration is change in velocity. (And velocity is speed in a certain direction.) If an object slows down, then it is changing velocity and thus accelerating. (In this case, the acceleration is negative.) If an object changes direction, then it's velocity changes, so this is also acceleration. (This is centripetal acceleration.)

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