How much force is required to move a body of mass 1 kg by 2 metre per second square
Answers
Answer:
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No force is required. If an object is not accelerating, no force is needed to keep it in motion. Since the object is moving at a constant velocity, then, unless a force acts on it to change its motion, the object will continue in its motion. This is just a restatement of Newton’s first law - the law of inertia.
However, as it turns out, our experience is that there almost always seem to be forces acting on objects, so there will almost always be changes in an object's motion. When we roll a ball across the lawn, the grass exerts a frictional force on the ball which slows it down over time. When an airplane flies through the air, the air itself exerts a frictional force on the airplane to slow it down.
It is only when objects can be isolated from such forces that we can observe that they do not slow down. Usually, it is only in a vacuum, like in space, where this can be observed to happen.