Basic kinematics variables: When can we be certain that the average velocity of an object is always equal to its instantaneous velocity?
A) always
B) never
C) only when the velocity is constant
D) only when the acceleration is constant
E) only when the acceleration is changing at a constant rate

Question

Quizplus · Accepted Answer

The average velocity of an object is equal to its instantaneous velocity only when the velocity is constant. If the velocity is changing, then the average velocity over a given time interval will not be equal to the instantaneous velocity at any one point during that time interval.

Basic Kinematics Variables: When Can We Be Certain That the Average