- #1
phymatter
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just got a bit confused : because acceleration is a vector , so can we define acceleration for speed , that is , if we say speed at t1 is a , t2 is b , then average acceleraion is (b-a)/(t2-t1) pl. help !
Acceleration is the rate of change of velocity over time. It is a measure of how quickly an object's velocity is changing, either in terms of speed or direction.
Speed is a scalar quantity that only measures the magnitude of an object's velocity. Acceleration, on the other hand, is a vector quantity that includes both magnitude and direction.
As a vector quantity, acceleration has both magnitude and direction. This means that not only does it tell us how quickly an object is changing its velocity, but also in which direction the change is occurring.
Yes, acceleration can be negative. This simply means that the object is slowing down in the given direction, as opposed to speeding up.
Acceleration is typically measured in meters per second squared (m/s^2) in the metric system or feet per second squared (ft/s^2) in the imperial system.