The figure shows a position-time graph for the motion of an object. Consider the motion between 10 s and 20 s and indicate which of the following is true regarding

the average velocity vector,instantaneous speed, and average acceleration. a) Velocity is negative, speed is increasing, acceleration is negative b)Velocity is positive, speed is decreasing, acceleration is negative c) Velocity is positive, speed is increasing, acceleration is negative d) Velocity is negative, speed is increasing, acceleration is positive e) Velocity is negative, speed is decreasing, acceleration is negative f) Velocity is positive, speed is increasing, acceleration is positive