The answer depends on whether the graph is that of speed v time or distance v time.
well the difference between positive and negative velocity would have to be that if your motion speeds up than you have a positive and when or if your motion slows down then you would have a negative accelerarion!!!!
Snowboarding demonstrates speed, velocity, and acceleration. It can also demonstrate a positive or negative value for velocity and acceleration.
of Accelerate
You can assign positive numbers to east and negative to west - or you can do it the other way round. Which direction you call positive is really quite arbitrary. In Google Maps for example, east appears as positive.
The Cathode is the negative electrode; the anode is the positive electrode
Yes, acceleration can be positive and negative because acceleration is a vector. It has both direction and magnitude. The direction is what makes it positive or negative. Negative acceleration is usually called deceleration.
Positive acceleration = speeding up. Negative acceleration = slowing down.
A period of constant positive acceleration;a second period of zero acceleration; a third period of constant negative acceleration.
Positive is speeding up and negative is slowing down
This depends on what the graph represents. If it is a graph of velocity on the vertical and time on the horizontal, then if acceleration is at a constant rate, the graph will be a straight line with positive slope (pointing 'up'). If acceleration stops, then the graph will be a horizontal line (zero acceleration or deceleration). If it is deceleration (negative acceleration), then the graph will have negative slope (pointing down).
Positive acceleration = speeding up. Negative acceleration = slowing down.
positive
Positive acceleration ==> speeding up Negative acceleration ==> slowing down
Actually, it depends on how you define the coordinate axes, but usually when moving forward, negative acceleration decreasesspeed, positive acceleration increasesit.
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
Retardation or deceleration is negative acceleration. It is opposite to the direction of velocity.
If you define the "up" direction as "positive", then the acceleration is negative, because it is downward. If you define "down" as positive, then acceleration is negative. You can use any convention; just be sure to be consistent within a particular calculation, to avoid errors.