What is the angle between the vectors A and -A when these vectors are drawn from a common origin? A) 90° B) 0° C) 360° D) 180° E) 270°.A car travels along east and its velocity decreases. The acceleration of the car is in which of the following directions? A) Eastward B) Westward C) Northward D) Southward E) Cannot be determined without additional information.Under which of the following conditions would a car have a westward acceleration? A) As a car travels eastward with its velocity is increasing. B) As a car travels eastward with its velocity is decreasing. C) As a car travels westward with its velocity is decreasing. D) As a car travels westward with its velocity is constant. E) As a car travels eastward with its velocity is constant.A car travels along eastward with a constant velocity. The magnitude of the acceleration of the car is A) decreasing. B) increasing. C) non-zero constant. D) zero. E) None of the other choices is correct.If the acceleration vector of an object is directed parallel to the velocity vector, then A) the object is speeding up. B) the object is slowing down. C) the object is moving with a constant velocity. D) the object is turning. E) the object is at rest.