Stationary
this object that appears to stay in place is a reference point.
If an object has constant velocity, its motion is said to be uniform. This means the object is moving in a straight line at a consistent speed.
If an object is not moving, the forces acting on it are said to be balanced. This means that the forces are equal in magnitude and opposite in direction, causing the object to remain at rest.
The answer to the question seems to be clearly given within the question. You have said that the object " ... is moving ... " in a straight line. Therefore we conclude that if you have been honest with us, then the object is certainly in motion.
An object is said to be in motion when it changes its position over time relative to a reference point. If an object is moving, it is undergoing a change in its position with respect to its surroundings.
It can be said that the net force applied on the object is zero or that the object is in translational equilibrium. Keep in mind that these terms can also be applied if the object is moving at a constant velocity.
If the displacement-time graph is parallel to the time axis, the object is at rest. This is because the displacement is not changing over time, indicating that the object is not moving.
When all the forces on an object cancel each other out, the object is said to be in a state of equilibrium. This means that the object will either remain stationary or continue moving at a constant velocity.
An object that moves with constant position will have constant velocity or acceleration. This is said to be moving in positive direction and maintains the position.
Deceleration is merely acceleration in a direction opposite to the original motion. If something isnt moving it cannot be decelerated but if it is moving and the resultant force acts in the opposite direction to motion it will decelerate the object.
Velocity is negative in a moving object when the object is moving in the opposite direction of its positive reference point.
this isnt scientific, but its called an object.