Question

An object is accelerating if there is a change in speed and/or ________.

A.) time
B.) position
C.) direction
D.) displacement

Answer 1

A change in C. Direction.

Answer 2

Acceleration is a vector quantity which means that it concerns about the direction and the velocity. Thus, the question above may be answered by two of the choices. Those are letter "C. direction" and letter "D. displacement".