An object that is traveling east at a constant rate has

acceleration and speed, but not velocity.

speed, but neither velocity nor acceleration.

speed and velocity, but not acceleration.

velocity, but neither acceleration nor speed.

An object that is traveling east at a constant rate has speed and velocity, but not acceleration. Speed refers to the distance traveled per unit of time, while velocity refers to the speed and direction of an object's motion. Acceleration, on the other hand, refers to the rate at which an object's velocity changes over time. Since the object is traveling at a constant rate and not changing its velocity, there is no acceleration.