B. negative. C. zero. D. positive then negative. E. negative then positive. 16. A common statistic...
D. positive then negative. E. negative then positive. 15. A vehicle is traveling in the +x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the velocity of the vehicle is A. positive. B. negative. C. zero. D. positive then negative. E. negative then positive 16. A common statistic in car tests is the standing (starting from rest) quarter-mile performance. A modern sports car can achieve a terminal speed (speed at the