PHYSICS

What does it mean to have a positive acceleration?

• A positive acceleration means the object is gaining speed in the positive direction.

What does it mean to have a negative acceleration?

• A negative acceleration means the object is gaining speed in the negative direction.

An object that is speeding up has either:

• a positive velocity and a positive acceleration OR

• a negative velocity and a negative acceleration

An object that is slowing down has either:

• a positive velocity and a negative acceleration OR

• a negative velocity and a positive acceleration