Which of the following statements is true of acceleration?

A. Acceleration always has the same sign as displacement.

B. Acceleration always has the same sign as velocity.

C. The sign of acceleration depends on both the direction of motion and how the velocity is changing.

D. Acceleration always has a positive sign.

Answer:C

Explanation:

Option A is false

for example if a ball is thrown upward then its acceleration is opposite to the direction of displacement

Option B is false

acceleration depends upon change in velocity

Option C is Correct

Sign of acceleration depends upon the change of velocity

If velocity is increasing then acceleration is positive and vice-versa.