Answer :
If an object is speeding up its acceleration can be positive or negative depending on the direction of motion.
What is positive and negative acceleration?
According to mathematics, a negative acceleration indicates that the velocity will be subtracted, while a positive acceleration indicates that the velocity will be increased.
In physics,
A positive acceleration indicates a rising velocity over time.
Negative acceleration describes a speed decrease over time.
A bus or car going at an accelerating rate is said to have positive acceleration.
We may say that it is speeding up in the direction it is moving.
When we use the brake in the previous example, the speed of the car reduces.
Then it experiences a deceleration.
To learn more about acceleration, refer
https://brainly.com/question/18608559
#SPJ4