If the velocity and acceleration have opposite signs, is it necessary that the velocity has ro decrease?

Question

If so then, what about +ve acceleration and -ve velocity?

Answer 1

• If the velocity and acceleration are in the same direction (both have the same sign - both positive or both negative) the object is speeding up.
• If the velocity and acceleration are in opposite directions (they have opposite signs), the object is slowing down.

Comments

What about the case above, at that time object actually becomes FASTER.

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velocity will decrease the that case