## Is acceleration a velocity vs time graph?

The area under an acceleration graph represents the change in velocity. In other words, the area under the acceleration graph for a certain time interval is equal to the change in velocity during that time interval.

## What does a positive acceleration graph look like?

If the object is speeding up, then its acceleration vector is directed in the same direction as its motion (in this case, a positive acceleration). The acceleration-time graph shows a horizontal line in the positive region of the graph (positive acceleration).

## What is the difference between an increasing acceleration and a positive acceleration?

If the speed is increasing, the car has positive acceleration. In both cases, the car is accelerating, but one acceleration is positive and one is negative. When a car changes direction, it is also accelerating. In the figure to the right, compare the direction of the acceleration to the direction of the velocity.

## Does positive acceleration mean increasing velocity?

Positive acceleration velocity of object increases Negative acceleration velocity of object decreases; the object may still be traveling in the positive direction, but since the final velocity is smaller than the initial velocity, the object’s acceleration is negative.

## What is negative acceleration or retardation or deceleration?

Deceleration also known as retardation or negative acceleration, is the acceleration acts in the opposite direction of motion and is responsible for reducing the velocity of a body. An object moving with a velocity of 40m/s is brought to rest in 8 seconds by a constant deceleration.

## Does something with constant speed have acceleration?

The velocity vector is constant in magnitude but changing in direction. For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating. It is accelerating because the direction of the velocity vector is changing.