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No. Force is required for accelerated motion, but not for uniform motion.
Nothing changes. When no force acts on an object moving with constant velocity, the body continues its motion with uniform velocity, or if the object is at rest, it will remain at rest.
No. If the forces on an object are unbalanced, that means their sum is not zero, and there is a net force on the object. Since there is a net force on it, the object is accelerated, which is another way of saying that its velocity changes.
Any object on which an unbalance force is acting will accelerate - i.e., its velocity will change.
I am not sure what you mean, but that's how our Universe works. If there is a net force acting on an object, its velocity will change - in other words, it will accelerate.
The object will remain at rest if it was at rest or will maintain its motion with uniform velocity if it was moving.
Gravity. The object starts at zero velocity, and gravity always pulls the same. Drag, however, increases when velocity increases. Terminal velocity is when gravity has accelerated the object to the speed where drag is the same as gravity.
B. The direction of the object's velocity is constant.
From a kinematic perspective, whenever an object's velocity changes at a constant rate it is in uniform acceleration.From a dynamic perspective, whenever the net force on an object is constant the object will undergo uniform acceleration.
A moving object being accelerated will show a change in its velocity (it may move faster, or slower, or experience a change in direction). A stationary object will respond to acceleration only if there is no other force acting to prevent its response. For example: gravity is a constant force of acceleration, but objects cannot move toward the center of the earth if they are being blocked by another object.
If you mean in atmosphere, the answer is "yes". It's called "terminal velocity." What the velocity is depends upon the shape of the object, because of the resistance of the atmosphere. Mind you, not the weight, since all objects are accelerated at the same rate in gravity. But if you're a great wide object, your terminal velocity (the fastest you can go) will be lower than if you're a ball bearing. In the absence of atmosphere, the answer is "no," because you will accelerate (non-uniform velocity) until you don't anymore.
what a stupid qn. ya it is possible