This is a closed note, closed book quiz. Please try to be neat, clear and concise. The points allocated to each question are shown in parentheses following the question. Given an example to support your answer. No, for the car could be changing its direction of motion.
Speed refers to the magnitude of the velocity.
An object moving with constant velocity must move with constant speed in a straight line. An example of the above is a car rounding a corner at constant speed. Velocity is the time rate of change of position whereas acceleration is the time rate of change of velocity. As the text mentions acceleration measures how fast how fast changes. Both quantities are vectors.