Answer: speed and velocity, but no acceleration
Step-by-step explanation:
Velocity
and acceleration
are both vector quantities, and as vectors they have magnitude and direction. So, if one of this elements (or both) changes, this quantities also changes.
In the case of velocity, its magnitude is the speed and its direction is to the East.
In the case of acceleration, which is the variation of velocity in time, since
is constabt and the direction is the same, the acceleration is zero.
Therefore:
An object that is traveling east at a constant rate has speed and velocity, but no acceleration.