Just the 3 basics
It's not necessary to specify that the object is moving at a constant speed. Any object with no outside forces acting on it does that. It also continues moving in a straight line.
Sure. If all of the forces on an object are balanced, then the object continues moving in a straight line at constant speed. All of the forces on an airplane cruising in level flight, or on a car on cruise-control on a straight piece of road, are balanced.
Sure. If all of the forces on an object are balanced, then the object continues moving in a straight line at constant speed. All of the forces on an airplane cruising in level flight, or on a car on cruise-control on a straight piece of road, are balanced.
When the entire group of forces acting on an object is balanced, the object's motion is 'uniform' ... its speed is constant and it moves in a straight line. If its speed is changing or its path is not straight, that's called "acceleration", and it means that the group of forces acting on the object is not balanced.
For objects moving in circular motion, the forces acting on them are centripetal force, which is directed towards the center of the circle, and inertia or centrifugal force, which acts outward from the center. These forces are responsible for maintaining the object's circular trajectory and preventing it from moving in a straight line.
To keep moving in a straight line. This is rather hard to show because the gravitational pull of the Earth is hard to escape without a rocket.
it moves with uniform velocity ... constant speed in a straight line
Yes, but the net force is ZERO! If an object is moving at constant velocity, the sum of the forces acting upon it is zero. If at any time the sum of the forces -- sometimes called the net force -- is non-zero, the object will accelerate in the direction of the resultant force.
No. An unbalanced force causes motion, but balanced forces keep a body in motion in a straight line at constant velocity, or at rest at constant 0 velocity.
When the direction of forces is collinear, it means that the forces are acting along the same line of action. This implies that the forces have the same or opposite directions, but are in a straight line. When forces are collinear, their effects can be combined or canceled out depending on their magnitudes and directions.
When balanced forces act on an object, the object will remain at rest or continue to move with a constant velocity. This is because the forces exerted in opposite directions cancel each other out, resulting in no change in motion.
Some forces that can act upon a moving object include friction, air resistance, gravity, and applied forces like pushing or pulling. These forces can affect the speed, direction, and motion of the object.