Physics
Units of Measure

# What is negative accleration?

Acceleration is change in velocity. It is a vector, so some direction is choosen as positive and the opposite direction as negative. Then you have two possibilities;(1) the object is increasing its speed in the negative direction. (2) the object is decreasing its speed in the positive direction. Both of these give negative acceleration. For example; if up is choosen as positive then acceleration due to gravity is always negative because when a projectile is projected up with some initial velocity it decreases its speed on the way up. But on the way down its increasing its speed, in the negative direction.

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## Related Questions

when velocity is increasing,accleration is positiveand when velocity is decreasing,accleration is said to be negative.

Negative acceleration describes a decrease in velocity over time. Accleration is an increase and zero acceleration is no change in velocity.

accleration is the speed. Velocity is when you know the speed of an object and its direction.

An Acceleration is the change in speed or direction.

if that is a typo and you mean accleration it means going fast

Acceleration with respect to time = a , where 'a' is a constant.

yes the acceleration can take a negative value. for example an object with an accleration of -2 ms-2 would be slowing down. However this is normally called deceleration.

Acceleration = change in velocity/time for the change in the direction of the change.

It is not. It is measured in metres per second ^2.

in classical mechanics acceleration is the force acting on the body divided by the mass of the body.

the race track has accleration and power forced into it

Acceleration is measured in m/s2 (metres per second squared)

Acceleration or deceleration is measured in metres per second2 (ms-2).

When the velocity stops changing, then, by definition, the acceleration is zero.

Change in Distace= Initial velocity multiplied by change in time plus half the accleration times change in time squared x=VoT+.5aT^2 Final velocity squared=Intial velocity squared plues two times accleration times change in distance Vf^2=Vo^2+2aX Final velocity= Initial velocity plus accleration times change in time Vf=Vo+aT

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