A Car Is Traveling at an Initial Velocity of 15

Multiple Choice

A car is traveling at an initial velocity of 15 m/s along a straight road; it begins to accelerate at a constant rate. Forty seconds later the velocity of the car is 28 m/s (in the same direction) . The average velocity of the car during the 40-second interval is

A) 15 m/s.
B) 28 m/s.
C) 22 m/s.
D) 0 m/s.