Top Answer

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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0Increasing speed, decreasing speed, and change of direction

I don't really know what you mean by that but i think that the problem is that things always reach a top speed and can't always keep accelerating =D

acceleration= force/mass and also change in direction,speed are acceleration

"Constant" means that regardless of when you measure it, the result is always the same. "Velocity" means speed and its direction. "Acceleration" means the rate at which speed is changing, and the direction in which it's changing.

You can't convert acceleration to speed or vice versa, if that's what you mean, since they are really quite different things. Acceleration is defined as the rate of change of velocity (dv/dt); therefore it has units of speed / time, or equivalently, distance / time squared.

If by uniformly you mean at a constant speed then that implies no acceleration or an acceleration of zero.

Yes. Acceleration is always in the same direction as the unbalanced force.Note: This does not mean that velocity is necessarily in that direction. Velocity and acceleration are two different things. The integral of acceleration does become velocity, and the integral of velocity does become position, but that has nothing to do with the answer to the question.

Deceleration is the opposite of acceleration. It means decreasing speed and can be measured as negative acceleration.

when the acceleration of the body is positive its mean that its velocity is increasing and the speed of the motion also increases and speed will decrease when acceleration is negative.

"Acceleration" doesn't mean "speeding up". It means the rate at which velocity is changing. And "velocity" doesn't mean "speed". It means speed and direction.

Yes. Acceleration by definition is a change in velocity, which is a change in speed, which could mean going faster or slower.

No. A negative acceleration could mean a change in direction

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.)

Here's a definition of acceleration: Acceleration is any change in the speed or direction of motion.Velocity is the speed and direction of motion. (If either of them changes, thenthe velocity changes, and by the way, according to the definition, there is alsoacceleration).Speed doesn't have to change in order for acceleration to be present. Accelerationis occurring if the direction of motion is changing, even if the speed is constant.A couple more factoids may be helpful:Acceleration does not mean speeding up.Velocity is not simply a different tech-sounding word for speed.They're different things.

Pressumably it means that the speed increases.

Speed is how fast you are moving. Acceleration is the rate at which speed is changing. In strict physical terms, acceleration is the difference between the ending and starting speed divided by the time over which the change occurred. In that sense the word can mean that speed is increasing (positive acceleration), decreasing (negative acceleration), or not changing (zero acceleration). However in common usage, negative acceleration is usually called deceleration. Acceleration can be calculated as an average (Δv/Δt) or an instantaneous (dv/dt) measurement.

Yes. "Acceleration" does not mean "speeding up". It means any change in speedor direction of motion. If the body is moving on a curve, even at a constant speed,its direction is changing, so there is acceleration.

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".

"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.

It's possible, but not necessary, that a particle moving with constant speedhas zero acceleration. In order for acceleration to be zero, it's also necessarythat the particle be moving in a straight line.An object moving with constant speed around a curve has acceleration."Acceleration" does not mean "speeding up".

It means the speed doesn't change. Stated in different terms, the acceleration is zero.It means the speed doesn't change. Stated in different terms, the acceleration is zero.It means the speed doesn't change. Stated in different terms, the acceleration is zero.It means the speed doesn't change. Stated in different terms, the acceleration is zero.

acceleration, gain, accelerate, speed up

Because "acceleration" doesn't mean 'speeding up'. It means any change inthe speed or direction of motion.The only motion that's not accelerated is motion at a constant speed in astraight line. If the speed is increasing, or the speed is decreasing, or thedirection is changing, that's acceleration.

The definition of acceleration is:Change of velocity, that is, change of speed or direction or both.In popular, every-day usage, 'acceleration' has come to mean 'speeding up', but as youcan see from the definition, that's not accurate.Acceleration can also mean a change in the direction of motion, without any changeof speed.

It means that something accelerates, or is subject to acceleration. In popular language, "acceleration" is often understood to mean that the speed increases. In physics, acceleration is any change of velocity.

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