Yes. An object moving at constant velocity would have zero acceleration.
Definitely. Acceleration is defined as a change in velocity, so as long as the velocity doesn't change, acceleration is zero.
No, you cannot have a zero displacement and a nonzero average velocity. If the object has not moved any where how can you attain a nonzero velocity? You cannot.
Yes, an object can have a velocity of zero and an acceleration of zero. It's an object with a velocity of zero and no net applied force.
If an object has zero acceleration, its velocity doesn't have to be zero. Acceleration is a measure of the change in velocity over time. Zero acceleration means there is no change in velocity over time, namely constant velocity. Constant velocity can be any velocity (including zero velocity or "at rest"), so the object's velocity doesn't have to be zero to have zero acceleration.
As long as acceleration is zero, the object's velocity is constant.
Yes, for example, a car moving at constant speed.
Acceleration is the rate of change of velocity, a=dv/dt Therefor if a= 0 the velocity is constant or constantly the same. It can have any value however while it remains the same.
No on acceleration and yes on velocity
Yes. This happens, for example, when you throw an upject directly up, and it reaches its highest point. In that case, its velocity is zero, and its acceleration is -9.8. (If it didn't have acceleration, it would stay up there.)
An object at rest has a constant velocity of zero. Both the object at rest and the object moving at constant velocity have zero acceleration.
When an object is in equilibrium, the acceleration is zero. When the acceleration is zero, the velocity does not change; the non changing velocity includes the case when the velocity has value zero.