If nothing affects it, then there is no force acting on it. if there is no force, there is balanced force (trivial meaning of 'nothing'). If there is balanced force, there is constant speed.
This constant speed can also be maintained with a force, but the question at hand states nothing is affecting it, so that discussion is elsewhere.
Nothing
The mass, and the speed.
Speed directly affects momentum. Momentum is the product of an object's mass and its velocity, so the faster an object is moving, the higher its momentum will be. This means that an object moving at a higher speed will have greater momentum compared to the same object moving at a lower speed.
Tangential acceleration is the change in speed of an object moving in a circular path, while centripetal acceleration is the acceleration that keeps an object moving in a circular path. Tangential acceleration affects the speed of the object, while centripetal acceleration affects the direction of the object's motion.
Tangential acceleration is the change in speed of an object moving in a circular path, while radial acceleration is the change in direction of the object's velocity. Tangential acceleration affects the object's speed, while radial acceleration affects the object's direction of motion.
Gravity and speed are related in the context of how gravity affects the speed of an object. As an object falls towards the Earth, it accelerates due to gravity, increasing in speed as it falls. The speed of an object falling due to gravity depends on factors such as the object's mass and the strength of the gravitational force acting on it.
An object's speed is affected by factors such as the amount of force applied to it, the object's mass, the presence of friction or air resistance, and the incline or surface it is moving on. In addition, external factors like gravity and any obstacles in the object's path can also impact its speed.
Tangential acceleration affects an object's speed, causing it to speed up or slow down along its path of motion. Radial acceleration, on the other hand, affects the direction of an object's motion, causing it to change its path or turn.
The factors affecting the speed of a moving object include the force applied to it, the mass of the object, and the presence of any opposing forces such as friction or air resistance. Additionally, the object's shape and surface area can also influence its speed.
Because the effect of gravity is to cause forces between every two objects that have mass, and force on an object generally affects its speed.
Mass has more effect on an object because it determines the amount of inertia an object has, resisting changes in its motion. Speed, on the other hand, affects how quickly an object can change its position but does not directly influence its resistance to being moved or stopped. Therefore, an object with more mass will be more difficult to accelerate or decelerate compared to an object with higher speed.
If instantaneous speed doesn't change, it means the object is moving at a constant speed at that particular moment. This could happen if the object is moving in a straight line without any acceleration or deceleration.