Question

mission kc4: acceleration
if an object has an acceleration then it must be _____. select all that apply.
a. changing its direction
b. changing its speed
c. changing its velocity
d. none of these

Explanation:

Acceleration is the rate of change of velocity. Velocity is a vector quantity with both speed and direction. So, if there is acceleration, velocity must change. Changing speed or direction (or both) means changing velocity.

Answer:

c. changing its velocity